Question

Discuss various factors on which electron affinity depends. The Electron affinity for nitrogen is negative. Why? 4 mark question​

Answer 1

Answer:

Notice that electron affinity decreases down the group. When nonmetals gain electrons, the energy change is usually negative because they give off energy to form an anion (exothermic process); thus, the electron affinity will be negative

Answer 2

Answer:

Electron affinity reflects the ability of an atom to accept an electron. It is the energy change that occurs when an electron is added to a gaseous atom. Atoms with stronger effective nuclear charge have greater electron affinity.

Group VIII elements, noble gases, have electron affinities near zero, since each atom possesses a stable octet and will not accept an electron readily.