How are the mass number and atomic number of a nucleus affected by alpha and beta emissions?
Q. I need to know the number of the mass and atomic numbers. for example: Gamma has a mass number change of 0 and it has an atomic number change of 0. Now I need to know the same for Alpha and Beta particles. Oh I forgotten that it's important for me to know the penetrating power of alpha,beta and gamma radiation too for Chemistry.
Asked by Taylor - Wed Nov 4 20:36:18 2009 - - 1 Answers - 0 Comments
Q. I need to know the number of the mass and atomic numbers. for example: Gamma has a mass number change of 0 and it has an atomic number change of 0. Now I need to know the same for Alpha and Beta particles. Oh I forgotten that it's important for me to know the penetrating power of alpha,beta and gamma radiation too for Chemistry.
Asked by Taylor - Wed Nov 4 20:36:18 2009 - - 1 Answers - 0 Comments
What is the atom with the smallest atomic number that contains the same number of electrons in its s subshells?
Q. What is the atom with the smallest atomic number that contains the same number of electrons in its s subshells as it does in its d subshells? Give the atomic number as your answer.
Asked by Nessa - Sun Apr 12 05:38:01 2009 - - 4 Answers - 0 Comments
A. it should be 1s^2 / 2s^2 2p^6/ 3s^2 3p^6 3d^8 / 4s^2 so there are 8 in s sub shells and 8 in d sub shell. so the atomic number is 28Ni. Nickle
Answered by error_death - Sun Apr 12 05:47:32 2009
Q. What is the atom with the smallest atomic number that contains the same number of electrons in its s subshells as it does in its d subshells? Give the atomic number as your answer.
Asked by Nessa - Sun Apr 12 05:38:01 2009 - - 4 Answers - 0 Comments
A. it should be 1s^2 / 2s^2 2p^6/ 3s^2 3p^6 3d^8 / 4s^2 so there are 8 in s sub shells and 8 in d sub shell. so the atomic number is 28Ni. Nickle
Answered by error_death - Sun Apr 12 05:47:32 2009
What three things does the atomic number of an element tell us?
Q. What three things does the atomic number of an element tell us? Also, what are the majority of the elements on the periodic table classified as?
Asked by FaTeSeaLeRs - Fri Nov 7 19:06:10 2008 - - 2 Answers - 0 Comments
A. The atomic number is the number of protons; in a neutral atom, it is also the number of electrons; it also identifies an element. Most elements are metals.
Answered by Be Positive!!! - Fri Nov 7 19:08:26 2008
Q. What three things does the atomic number of an element tell us? Also, what are the majority of the elements on the periodic table classified as?
Asked by FaTeSeaLeRs - Fri Nov 7 19:06:10 2008 - - 2 Answers - 0 Comments
A. The atomic number is the number of protons; in a neutral atom, it is also the number of electrons; it also identifies an element. Most elements are metals.
Answered by Be Positive!!! - Fri Nov 7 19:08:26 2008
Fluorine has an atomic number of 9. What is the symbol and charge for an ion of fluorine that has 10 electrons?
Q. Fluorine has an atomic number of 9. What is the symbol and charge for an ion of fluorine that has 10 electrons?
Asked by Lauren S - Thu Oct 23 15:54:25 2008 - - 2 Answers - 0 Comments
A. since you gained an electron, you add a negative sign to the top as a superscript F -
Answered by Omy - Thu Oct 23 15:58:38 2008
Q. Fluorine has an atomic number of 9. What is the symbol and charge for an ion of fluorine that has 10 electrons?
Asked by Lauren S - Thu Oct 23 15:54:25 2008 - - 2 Answers - 0 Comments
A. since you gained an electron, you add a negative sign to the top as a superscript F -
Answered by Omy - Thu Oct 23 15:58:38 2008
How do i workout the atomic mass and atomic number?
Q. How do i workout the atomic mass and atomic number?
Asked by Susan Schmid - Fri Feb 1 07:07:54 2008 - - 3 Answers - 0 Comments
A. Let an element have e electrons, n neutrons and p protons. Atomic Mass = n + p (since mass 'e' <<< n or p) Atomic Number = p or e So, Atomic number is 'number' of electrons OR protons Mass is sum of Protons and neutrons So, atomic mass = atomic number + neutrons ps: Mass expressed in AMU, this is only to calculate
Answered by Stray Dog - Fri Feb 1 07:24:23 2008
Q. How do i workout the atomic mass and atomic number?
Asked by Susan Schmid - Fri Feb 1 07:07:54 2008 - - 3 Answers - 0 Comments
A. Let an element have e electrons, n neutrons and p protons. Atomic Mass = n + p (since mass 'e' <<< n or p) Atomic Number = p or e So, Atomic number is 'number' of electrons OR protons Mass is sum of Protons and neutrons So, atomic mass = atomic number + neutrons ps: Mass expressed in AMU, this is only to calculate
Answered by Stray Dog - Fri Feb 1 07:24:23 2008
The atomic number of argon is 18. Will argon tend to form bonds with other elements?
Q. Is it true that the higher the atomic number is the less likely it is to bond with other elements? Why?
Asked by royal - Mon Sep 8 18:28:09 2008 - - 2 Answers - 0 Comments
A. No it will not. the reason not being becoz of the higher atomic number but because of the filled up or stable outer energy level as shown by its electronic configuration 2:8:8
Answered by tafkay - Mon Sep 8 18:36:48 2008
Q. Is it true that the higher the atomic number is the less likely it is to bond with other elements? Why?
Asked by royal - Mon Sep 8 18:28:09 2008 - - 2 Answers - 0 Comments
A. No it will not. the reason not being becoz of the higher atomic number but because of the filled up or stable outer energy level as shown by its electronic configuration 2:8:8
Answered by tafkay - Mon Sep 8 18:36:48 2008
What is the atomic number of fluorine ion and the atomic number of sodium ion?
Q. Ok so i got this science assignment where they are asking my for the atomic number of fluorine atom. I know that fluorine atom is just plain Fluorine on the periodic table, but now its asking me for the atomic number of Fluorine ION please help me, i do not know if there is an atomic number, atomic mass, protons, electrons and neutrons of fluorine ion, its also asking me to draw a bohr diagram of it. ive google searched: fluorine ion many times, but nothing comes up useful
Asked by gunstore hater - Sun Sep 7 22:27:54 2008 - - 1 Answers - 0 Comments
A. Atomic number of F or F- = 9 atomic mass = 18.9984 g/mol protons = 9 electrons = 10 ( becuase it is F-) neutrons = 10
Answered by Dr.A - Mon Sep 8 12:48:05 2008
Q. Ok so i got this science assignment where they are asking my for the atomic number of fluorine atom. I know that fluorine atom is just plain Fluorine on the periodic table, but now its asking me for the atomic number of Fluorine ION please help me, i do not know if there is an atomic number, atomic mass, protons, electrons and neutrons of fluorine ion, its also asking me to draw a bohr diagram of it. ive google searched: fluorine ion many times, but nothing comes up useful
Asked by gunstore hater - Sun Sep 7 22:27:54 2008 - - 1 Answers - 0 Comments
A. Atomic number of F or F- = 9 atomic mass = 18.9984 g/mol protons = 9 electrons = 10 ( becuase it is F-) neutrons = 10
Answered by Dr.A - Mon Sep 8 12:48:05 2008
How does electronegativity change as atomic number increases across the Periodic table?
Q. Also, how does electronegativity change as atomic number increases down a group?
Asked by sberrymilkshake26 - Fri Apr 25 16:55:31 2008 - - 2 Answers - 0 Comments
A. .| --->Up .| \/ Down Electronegativity, symbol , is a chemical property that describes the ability of an atom (or, more rarely, a functional group) to attract electrons towards itself in a covalent bond. It was proposed by Linus Pauling in 1932 as a development of valence bond theory. Electronegativity cannot be directly measured and must be calculated from other atomic or molecular properties. There are several methods of calculation.
Answered by Yamakiri (is a 1337 Chemist) - Fri Apr 25 17:17:25 2008
Q. Also, how does electronegativity change as atomic number increases down a group?
Asked by sberrymilkshake26 - Fri Apr 25 16:55:31 2008 - - 2 Answers - 0 Comments
A. .| --->Up .| \/ Down Electronegativity, symbol , is a chemical property that describes the ability of an atom (or, more rarely, a functional group) to attract electrons towards itself in a covalent bond. It was proposed by Linus Pauling in 1932 as a development of valence bond theory. Electronegativity cannot be directly measured and must be calculated from other atomic or molecular properties. There are several methods of calculation.
Answered by Yamakiri (is a 1337 Chemist) - Fri Apr 25 17:17:25 2008
What is the atomic number of the first element in row 8?
Q. What would the atomic number of the first element in row 8 of the periodic table be?
Asked by Henry From NY - Thu Nov 20 01:29:34 2008 - - 5 Answers - 0 Comments
A. Fe Iron 26
Answered by what? - Thu Nov 20 01:34:37 2008
Q. What would the atomic number of the first element in row 8 of the periodic table be?
Asked by Henry From NY - Thu Nov 20 01:29:34 2008 - - 5 Answers - 0 Comments
A. Fe Iron 26
Answered by what? - Thu Nov 20 01:34:37 2008
why does the atomic number of an atom usually differ from the mass number?
Q. why does the atomic number of an atom usually differ from the mass number? i know what ther are and the difference. i need to know why they are different.
Asked by clearly crazy - Wed Sep 9 16:56:53 2009 - - 2 Answers - 0 Comments
A. The atomic number is the number of protons; the mass number is the (average) number of nucleons (protons+neutrons) and there is usually one or more neutrons (Hydrogen-1 is the stable exception.)
Answered by unknown - Wed Sep 9 17:05:58 2009
Q. why does the atomic number of an atom usually differ from the mass number? i know what ther are and the difference. i need to know why they are different.
Asked by clearly crazy - Wed Sep 9 16:56:53 2009 - - 2 Answers - 0 Comments
A. The atomic number is the number of protons; the mass number is the (average) number of nucleons (protons+neutrons) and there is usually one or more neutrons (Hydrogen-1 is the stable exception.)
Answered by unknown - Wed Sep 9 17:05:58 2009
The atomic number of argon is 18. Is it likely that argon will form bonds with other elements?
Q. How do you figure out if it will most likely form bonds just by knowing its atomic number?
Asked by crazyrunnergrl - Wed Sep 5 20:50:49 2007 - - 5 Answers - 0 Comments
A. Argon, nmber 18, is in column 18, meaning that it has a full outer ring of electrons and is considered an inert or noble gas. It will not tend to react. It is used inside light bulbs because it does not react.
Answered by science teacher - Wed Sep 5 21:00:48 2007
Q. How do you figure out if it will most likely form bonds just by knowing its atomic number?
Asked by crazyrunnergrl - Wed Sep 5 20:50:49 2007 - - 5 Answers - 0 Comments
A. Argon, nmber 18, is in column 18, meaning that it has a full outer ring of electrons and is considered an inert or noble gas. It will not tend to react. It is used inside light bulbs because it does not react.
Answered by science teacher - Wed Sep 5 21:00:48 2007
what general trend occurs between atomic number and melting point for the alkaline earth metals?
Q. a. melting point generally increases with atomic number b.melting point first increases, then decreases with atomic number c.there is no trend between atomic number and melting point d.melting point generally decreases with atomic number pleasee help i need your help is the answer b?
Asked by blueeyedangel<3 - Sun Dec 30 18:38:15 2007 - - 2 Answers - 0 Comments
A. Let's take a look at the Alkaline Earth Metals: Atomic# Melting Point Be 4 1551 K Mg 12 922 K Ca 20 1112 K Sr 38 1042 K Ba 56 1002 K Ra 88 973 K It would be most correct to say that melting point "generally decreases" with increasing atomic number. The only exception to this trend is Magnesium which melts lower than "expected"
Answered by Charles M - Sun Dec 30 20:00:10 2007
Q. a. melting point generally increases with atomic number b.melting point first increases, then decreases with atomic number c.there is no trend between atomic number and melting point d.melting point generally decreases with atomic number pleasee help i need your help is the answer b?
Asked by blueeyedangel<3 - Sun Dec 30 18:38:15 2007 - - 2 Answers - 0 Comments
A. Let's take a look at the Alkaline Earth Metals: Atomic# Melting Point Be 4 1551 K Mg 12 922 K Ca 20 1112 K Sr 38 1042 K Ba 56 1002 K Ra 88 973 K It would be most correct to say that melting point "generally decreases" with increasing atomic number. The only exception to this trend is Magnesium which melts lower than "expected"
Answered by Charles M - Sun Dec 30 20:00:10 2007
How can atoms have different mass numbers but must have the same atomic number?
Q. A sample of calcium contains calcium 40, calcium 42, calcium 48, calcium 43 and clalcium 46 atoms. How can they have different mass numbers but must have the same atomic number?
Asked by Samantha - Thu Oct 1 07:57:54 2009 - - 4 Answers - 0 Comments
A. well the mass (A) of an atom comes from the protons and neutrons. A = P + N since they all have the same atomic number (same number of protons) then they have different neutron numbers. :D
Answered by Rudy S - Thu Oct 1 08:03:12 2009
Q. A sample of calcium contains calcium 40, calcium 42, calcium 48, calcium 43 and clalcium 46 atoms. How can they have different mass numbers but must have the same atomic number?
Asked by Samantha - Thu Oct 1 07:57:54 2009 - - 4 Answers - 0 Comments
A. well the mass (A) of an atom comes from the protons and neutrons. A = P + N since they all have the same atomic number (same number of protons) then they have different neutron numbers. :D
Answered by Rudy S - Thu Oct 1 08:03:12 2009
What is the atomic number of an atom with 83 p and 128 n?
Q. What is the atomic number of an atom with 83 p and 128 n?
Asked by Micro_lap - Wed Sep 17 17:37:49 2008 - - 7 Answers - 0 Comments
A. its 83 since the atomic number is the number of electrons it has and there is the same number of protons and electrons in a atom. so since there is 83 protons it means there is 83 electrons. which makes the atomic number 83. Hope this helps!
Answered by Franki!!! - Wed Sep 17 17:42:33 2008
Q. What is the atomic number of an atom with 83 p and 128 n?
Asked by Micro_lap - Wed Sep 17 17:37:49 2008 - - 7 Answers - 0 Comments
A. its 83 since the atomic number is the number of electrons it has and there is the same number of protons and electrons in a atom. so since there is 83 protons it means there is 83 electrons. which makes the atomic number 83. Hope this helps!
Answered by Franki!!! - Wed Sep 17 17:42:33 2008
What does the atomic number of an element describe?
Q. 1) Atomic weight 2) number of protons in the atom 3) number of electrons in the ion 4) number of neutrons in the atom
Asked by Cuong N - Thu Sep 18 22:45:47 2008 - - 4 Answers - 0 Comments
A. the answer is 2
Answered by Dr. Eddie - Fri Sep 19 14:07:09 2008
Q. 1) Atomic weight 2) number of protons in the atom 3) number of electrons in the ion 4) number of neutrons in the atom
Asked by Cuong N - Thu Sep 18 22:45:47 2008 - - 4 Answers - 0 Comments
A. the answer is 2
Answered by Dr. Eddie - Fri Sep 19 14:07:09 2008
How do you find the atomic mass, proton number, neutron number, electron number and mass number of an atom?
Q. I know Number of protons = Atomic number. the rest is so confusing to me. help?
Asked by unknown - Sun Sep 23 21:32:46 2007 - - 4 Answers - 0 Comments
A. Atomic Number = Number of Protons No. of Protons = Number of Electrons (same number + as -) Atomic Mass = Protons + Neutrons Remember Protons are positive, and electrons are negative, and Neutrons neutral. In a neutral atom you will have same number of protons as electrons. So the Atomic number is giving you both the number of protons and also the number of electrons, since there will be equal numbers. Also if you know the Atomic mass (protons + neutrons), you can subtract the Atomic number (protons) and therefore find the number of Neutrons. Also remember that on a Periodic chart, the atoms are arranged in order of Atomic number, which is above the symbol, and the larger number on the bottom, if given is the atomic mass. The… [cont.]
Answered by madcat - Sun Sep 23 21:56:25 2007
Q. I know Number of protons = Atomic number. the rest is so confusing to me. help?
Asked by unknown - Sun Sep 23 21:32:46 2007 - - 4 Answers - 0 Comments
A. Atomic Number = Number of Protons No. of Protons = Number of Electrons (same number + as -) Atomic Mass = Protons + Neutrons Remember Protons are positive, and electrons are negative, and Neutrons neutral. In a neutral atom you will have same number of protons as electrons. So the Atomic number is giving you both the number of protons and also the number of electrons, since there will be equal numbers. Also if you know the Atomic mass (protons + neutrons), you can subtract the Atomic number (protons) and therefore find the number of Neutrons. Also remember that on a Periodic chart, the atoms are arranged in order of Atomic number, which is above the symbol, and the larger number on the bottom, if given is the atomic mass. The… [cont.]
Answered by madcat - Sun Sep 23 21:56:25 2007
suppose an element has a mass number of 64 and an atomic number os 29, how many neutrons does it have?
Q. suppose an element has a mass number of 64 and an atomic number os 29, how many neutrons does it have? and why ?
Asked by jackieliu1230 - Sun May 4 20:38:25 2008 - - 2 Answers - 0 Comments
A. 64amu - 29p = 35n Cu-64
Answered by steve_geo1 - Sun May 4 20:46:46 2008
Q. suppose an element has a mass number of 64 and an atomic number os 29, how many neutrons does it have? and why ?
Asked by jackieliu1230 - Sun May 4 20:38:25 2008 - - 2 Answers - 0 Comments
A. 64amu - 29p = 35n Cu-64
Answered by steve_geo1 - Sun May 4 20:46:46 2008
What is the number of neutrons in an isotope with an atomic number of 50?
Q. I'm studying for my entrance exam to nursing school, and this is one of the questions in the study guide. The answer choices are as follows: a. likely to be 50. b. likely to exceed 60. c. likely to be less than 40. d. unpredictable in comparison with the atomic number. The answer in the back of the book says it's "b." The explanation is as follows: "As elements increase in atomic numbers, the neutron to proton ratio tends to increase." Can somebody explain this please?
Asked by tlcdoudt - Sat Jul 25 17:09:19 2009 - - 4 Answers - 0 Comments
A. First, some basics: The atomic number is the number protons in the nucleus of an isotope. All isotopes of the same element have the same atomic number. The mass number of an isotope is the number of protons + neutrons in the nucleus of that isotope. Various isotopes of the same element will have different mass numbers. Keep in mind that mass numbers are ALWAYS whole numbers (counting numbers). Do not confuse the mass number with the atomic mass of an isotope. The atomic mass of an isotope must be determined experimentally, but they are tabulated in various tables of the isotopes. The atomic mass of an element (as listed on the periodic table) is the weighted average of all of the isotopes of that element. The number of protons for… [cont.]
Answered by pisgahchemist - Sat Jul 25 17:25:35 2009
Q. I'm studying for my entrance exam to nursing school, and this is one of the questions in the study guide. The answer choices are as follows: a. likely to be 50. b. likely to exceed 60. c. likely to be less than 40. d. unpredictable in comparison with the atomic number. The answer in the back of the book says it's "b." The explanation is as follows: "As elements increase in atomic numbers, the neutron to proton ratio tends to increase." Can somebody explain this please?
Asked by tlcdoudt - Sat Jul 25 17:09:19 2009 - - 4 Answers - 0 Comments
A. First, some basics: The atomic number is the number protons in the nucleus of an isotope. All isotopes of the same element have the same atomic number. The mass number of an isotope is the number of protons + neutrons in the nucleus of that isotope. Various isotopes of the same element will have different mass numbers. Keep in mind that mass numbers are ALWAYS whole numbers (counting numbers). Do not confuse the mass number with the atomic mass of an isotope. The atomic mass of an isotope must be determined experimentally, but they are tabulated in various tables of the isotopes. The atomic mass of an element (as listed on the periodic table) is the weighted average of all of the isotopes of that element. The number of protons for… [cont.]
Answered by pisgahchemist - Sat Jul 25 17:25:35 2009
How do I memorize an elements name,mass,atomic number and symbol?
Q. My freakin science teacher gave us homework over the holidays to memorize an elements mass symbol atomic number,and name whats an easy way to memorize them i have to memorize 45 how do i do it?
Asked by Luis S - Tue Dec 30 16:39:56 2008 - - 3 Answers - 0 Comments
A. Flash cards always worked good for me.
Answered by Tara - Tue Dec 30 16:47:25 2008
Q. My freakin science teacher gave us homework over the holidays to memorize an elements mass symbol atomic number,and name whats an easy way to memorize them i have to memorize 45 how do i do it?
Asked by Luis S - Tue Dec 30 16:39:56 2008 - - 3 Answers - 0 Comments
A. Flash cards always worked good for me.
Answered by Tara - Tue Dec 30 16:47:25 2008
Can someone explain atomic number and inonic radius?
Q. I'm having a hard time undstanding why inonic radius increases as atomic number increases, can someone explain this concept to me?
Asked by Strongholdlegend S - Wed Oct 17 10:47:10 2007 - - 2 Answers - 0 Comments
A. What the other guy said about the atomic number is true but not with the ionic radius. The reason why the ionic radius increases is the amount of electrons. Since the atomic number increases the number of electrons also increase. This means the more electrons the more electron shells there will be thus increasing the ionic radius.
Answered by kook321 - Wed Oct 17 11:46:58 2007
Q. I'm having a hard time undstanding why inonic radius increases as atomic number increases, can someone explain this concept to me?
Asked by Strongholdlegend S - Wed Oct 17 10:47:10 2007 - - 2 Answers - 0 Comments
A. What the other guy said about the atomic number is true but not with the ionic radius. The reason why the ionic radius increases is the amount of electrons. Since the atomic number increases the number of electrons also increase. This means the more electrons the more electron shells there will be thus increasing the ionic radius.
Answered by kook321 - Wed Oct 17 11:46:58 2007
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