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STATE THE FACTORS AFFECTING ELECTRON AFFINITY WITH PROPER EXPLAINATION
also state their trends of E:A in Periodic table
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Answers
Answer:
I think it would help u
Explanation:
Factors affecting electron affinity. Smaller the size of an atom, greater is its electron affinity. As the size of atom increases, the effective nuclear charge decreases or the nuclear attraction for adding electron decreases. Consequently, atom will have less tendency to attract additional electron towards itself.
Electron affinity mainly depend on 3 factors. They are,
- Atomic size
- Nuclear charge
- Electronic configuration
Atomic size: If the size of the atom is more, greater will be the distance between nucleus and incoming electron. Hence the incoming electron experiences less forces of attraction towards the nucleus of an atom. Therefore, smaller will be electron affinity value.
Nuclear charge: If the nuclear charge increases, the attraction for the incoming electron increases. Hence the electron affinity value increases.
Electronic configuration:Atoms with stable electronic configuration have a less tendency to accept an electron. Hence they possess smaller electron affinity values.
Example: Noble gases