Question

The second ionization enthalpy $IE_{2}$ of the elements of the second period are given below:
Element:
Li
Be
B
C
N
O
F
Ne

$IE_{2}$(kJ/mol):
7294
1756
2430
2354
2856
3396
3377
3966

Would you predict the $IE_{2}$ of Na in kJ/mol is:
(a) greater than 7294
(b) between 3966 and 7294
(c) less than 3966 ? Explain.

Answer 1

The 2nd ionization energy of sodium is

(b)