Energy is released when an electron is added to neutral isolated gaseous atom in its ground state to give monoanion and this is known as `EA`, or `Delta_(eg)H_(1)^(ɵ)`. The greater the amount of energy released the greater is the `EA`. `EA` is expressed in `eV a"atom"^(-1)` or `kcal or K\kJ mol^(-1)`.
The `EA` values of element depends on the following:
i. Nuclear charge
ii. Electroniv configuration
iii. Atomic size
iv. chemical environment

Options

A. I,iii, iv
B. I,ii,iii
C. ii,iii,iv
D. All

Answer

B