1.

A sudden jump between second and third ionisation enthalpies of an atom would be asssociated with the electronic configuration

Answer»

`1s^(2)2s^(2)2p^(6)`
`1s^(2)2s^(2)2p^(6)3S^(2)3p^(1)`
`1s^(2)2s^(2)2p^(6)3s^(2)3p^(2)`
`1s^(2)2s^(2)2p^(6)3s^(2)`

ANSWER :C


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