Question

Arrange the following in increasing order of
ionisation enthalpy
1) 1s², 2s², 2p6, 3s² 2) 1s², 2s² 2p6,3s1
3) 1s² 2s², 2P²
4) 1s², 2s2, 2p3​

Answer 1

Answer:

1) 1s^2, 2s^2, 2p^6, 3s^2