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A sudden large difference between the va...

A sudden large difference between the values of second and third ionization energies of elements would be associated with which of the following electronic configurations?

A

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

B

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

C

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

D

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

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