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An ion is an atom or molecule where the total number of electrons is not equal to the total number of protons, giving it a net positive or negative electrical charge. An anion (pronounced /ˈænaɪən/; an-eye-on), from the Greek word ἀνά (ana), meaning 'up', is an ion with more electrons than protons, giving it a net negative charge (since electrons are negatively charged and protons are positively charged). Conversely, a cation (pronounced /ˈkætaɪən/; cat-eye-on), from the Greek word κατά (kata), meaning 'down', is an ion with more protons than electrons. An ion consisting of a single atom is a monatomic ion. If it consists of two or more atoms, it is a polyatomic ion. Polyatomic ions containing oxygen, such as carbonate and sulfate, are called oxyanions. When writing the chemical formula for an ion, its charge is written as a superscript '+' or '−' following a number indicating the difference between the number of protons and the number of electrons. The number is omitted if it is equal to 1. For example, the sodium cation is written as Na, the '+' indicating that it has one less electron than it has protons. The sulfate anion is written as SO4, the '2−' indicating that it has two more electrons than it has protons. If an ion contains unpaired electrons, it is called a radical ion. Just like neutral radicals, radical ions are very reactive. FormationFrom Wikipedia under the
GNU Free Documentation License How does the addition of cyanide ions affect the uptake of sodium ions by a cell? Q. If sodium icons move from the surrounding solutions where they are at a low concentration into the cytoplasm of a cell where they are at a higher concentration. Cyanide ions stop the functioning of the electron carrier system in mitochoridria. Im stuck on the above question and this is the information in my assigment, does anyone know this or any links please Asked by Princess - Tue Nov 6 12:17:29 2007 - - 1 Answers - 0 Comments A. I thought sodium was pumped out of the cell... Anyway cyanide prevents respiration so any energy requiring processes, such as active transport, that occur will be hindered. Answered by Neil G - Tue Nov 6 12:40:28 2007 How does one go about finding ions in a compound? Q. For example:The number of ions of ammonium in the formula for ammonium phosphate. OR Number of Calcium ions in Calcium Carbonate. I believe it has something to do with change in EN. Asked by James K - Thu Dec 6 00:12:42 2007 - - 1 Answers - 0 Comments A. 1: ammonium is NH4 with a +1 charge phosphate is PO4 with a -3 charge ..so u have a +1 n a -3 charge..they need to equal u multiply ammonium by 3 to get a +3 charge since u have more than u atom u need ( ) to keep it separate ur answer is (NH4)3PO4 2: calcium= Ca +2 carbonate=CO3 -2 they equal.. ur answer: CaCo3 tadah!! lol Answered by im like omg! - Thu Dec 6 00:21:52 2007 What is the net ionic equation for the reaction in my experiment in which the following ions are detected?
Q. The ions were a) CO3 (2- ions), b) SO4 (2-ions), and c) Cl-. My solution has these ions but I don't understand how to answer the question? Asked by randytange - Thu Feb 21 07:12:42 2008 - - 1 Answers - 0 Comments A. CO3 (2-) + 2H+ ---> CO2 + 3/2 H2O SO4(2-) + 4H+ + 2e- ---> SO2 + 2H2O 2Cl- --> Cl2 + 2e- I think these are the answers, they are half equations and basically you need to find which is the reduction eq and the oxidation eq to find the net ionic equation. Answered by unknown - Thu Feb 21 07:23:15 2008 From Yahoo Answer Search: "ions"  news.google.com Greentech Media Lithium-air batteries may require three times as many lithium- ions as standard lithium- ion batteries, according to Jeff Dahn, a professor at Dalhousie ... and more » news.google.com io9 Picture the lattice of positive ions in a conductor as a grid. As an electron passes through the grid, its negative charge attracts the positive ions . ... news.google.com Next Big Future A very thin, 0.024 micron layer was heated to an electron temperature of about 100keV and an ion temperature of 30 kegs. The confinement-time-density ... From Google News Search: "ions"  agr.hokudai.ac.jp 175px x 320px | 10.50kB [source page] NMRof pdf 16 Nov 2000 16 38 6 9K MSof pdf 16 Nov 2000 16 38 7 4K ms htm 07 Nov 2007 14 24 9 2K ions jpg 09 Jun 1999 14 17 10K nmr htm 30 Nov 2006 11 05 11K flag jpg 09 Jun 1999 14 17 11K probe jpg 09 Jun 1999 From Yahoo Image Search: "ions"  blog.birddogpress.com Allison Bozeman Fri, 09 Oct 2009 13:04:04 GM There are many plaids and plaid infused designs in the feedsack world. Here is a little peek at August's installation of the Feedsack of the Month Club, which also included cupcake/drink flags. So many options for color combination here ...  bigsurkate.wordpress.com bigsurkate hu, 01 Oct 2009 18:36:42 GM The President of the Bali Institute, Marcia Jaffe and Issac Zikri will be presenting at the . IONS. Community Group Meeting on Saturday, October 3, 2009 from 2-5pm. Come and join us for some tradition Balinese food and culture. ...  custom-t-shirt.cn unknown Mon, 21 Sep 2009 10:22:25 GM Custom water fountains, especially when personalized, are perfect for corporate office lobbies, medical and dental facilities. From Google Blog Search: "ions" |
