why 15 group low velctron gain enthalpy than 16 group

Asked by kunalkumarshah123456! | 24th Sep, 2018, 12:09: PM

Expert Answer:

Group 15 elements have an outer electronic configuration ns2 np3 . as the p-orbital is half filled it will get extra stability than group 16 elements.
Due to this, to add an extra electron to group 15 elements is required energy hence group 15 elements shows a positive value of electron gain enthalpy.

Answered by Ramandeep | 25th Sep, 2018, 11:26: AM