2006-08-16 00:46:30 · 4 answers · asked by djkalai_88 1 in Science & Mathematics ➔ Chemistry
The electron affinity is a measure of the energy change when an electron is added to a neutral atom to form a negative ion. For example, when a neutral chlorine atom in the gaseous form picks up an electron to form a Cl- ion, it releases an energy of 349 kJ/mol or 3.6 eV/atom. It is said to have an electron affinity of -349 kJ/mol and this large number indicates that it forms a stable negative ion. Small numbers indicate that a less stable negative ion is formed. Groups VIA and VIIA in the periodic table have the largest electron affinities.
2006-08-16 00:53:01 · answer #1 · answered by Anonymous · 2⤊ 0⤋
Electron affinity is the amount of energy needed to remove an electron from a negatively charged ion; also, the energy released when a single electron is combined with an isolated atom.
2006-08-16 02:34:09 · answer #2 · answered by Ryan 1 · 0⤊ 0⤋
easiest way of thinking about it is it's the ability of an atom to pick up another electron. F has the highest
2006-08-16 00:58:48 · answer #3 · answered by shiara_blade 6 · 1⤊ 0⤋
it is simply the atom's ability to attract an electron..
2006-08-16 01:16:28 · answer #4 · answered by !_! 2 · 1⤊ 0⤋