Ionization Energy

N- 1st- 1402.3 2nd- 2856.1 3rd- 4578
P- 1st- 1011.7 2nd- 1903.2 3rd- 2912
As- 1st- 947 2nd- 1798 3rd- 2735
Sb- 1st- 833.7 2nd- 1794 3rd- 2443
Bi- 1st- 703.2 2nd- 1610 3rd- 2466

*Note- Their ionization energy increases from left-to-right.