To generate negative ions, the atomic species should have a high electron affinity, and the surface should have a low work function.
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This page deals with the electron affinity as a property of isolated atoms or molecules ( i . e . in the gas phase ).
43.
The electron affinities " E " ea of some molecules are given in the table below, from the lightest to the heaviest.
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Because the reaction for the electron affinity of Cl is as follows : Cl + ugen64 06 : 19, 18 July 2007 ( UTC)
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SiF 2 Ne 2 + has a bond from neon to silicon . has a very weak bond to fluorine and a high electron affinity.
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The electron affinity of an atom is the amount of energy released when an electron is added to a neutral atom to form a negative ion.
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Why is the electron affinity of flourine low then that at chlorine ? Preceding talk ) 15 : 17, 31 July 2013 ( UTC)
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The first electron affinity of chlorine ( the energy release when chlorine gains an electron ) is + 328.8 kJ per mole of chlorine atoms.
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The electron accepting power of the electron acceptor is determined by its electron affinity, which is the energy released when filling the lowest unoccupied molecular orbital.
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Either convention can be used in practice, but must be consistent in according a scalar, i . e . positive number to the electron affinity.
