Question

Give reason for the following:

i. Electron affinity of fluorine is smaller than chlorine.

ii. Electron affinity of Noble gases are zero.

iii. Electron affinity of halogens are very high.

Answer 1

i) it is due to exception ,Ea of 3rd period is always greater than 2nd period.                                                    ii)Ea of noble gases are 0 because they have full field orbitals.     iii)electron affinity of nonmetals is higher than that of metals.​