A sudden large jump between the value of second and third ionisation energies of elements would be associated with which of the following electronic configurations ?

A sudden large jump between the value of second and third ionisation e

1.	A sudden large jump between the value of second and third ionisation energies of elements would be associated with which of the following electronic configurations ?
Answer» `1s^(2) 2s^(2) 2p^(6) 3s^(1)` `1s^(2) 2s^(2) 2p^(6) 3p^(1)` `1s^(2) 2s^(2) 2p^(6) 3s^(1) 3p^(2)` `1s^(2) 2s^(2) 2p^(6) 3s^(2)` ANSWER :d