Question

The incrasing order of the first ionisation enthaplies of th elecments ` B , P, S` and `F` ( lowest first ) is :
A. `Flt S lt FltP`
B. ` P lt S lt B lt F`
C. `B lt P lt S lt F`
D. `B lt S lt P lt F`

Answer 1

Correct Answer - D
Ionisation enrgy increrase along the period , decrease down the group .