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Which of the following configurations wo...

Which of the following configurations would you expect to have the highest second ionisation enthalpy?

A

`1s^(2)2S^(2)`

B

`1s^(2)2s^(2)2p^(4)`

C

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

D

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

Text Solution

Verified by Experts

The correct Answer is:
C
After the loss of one electron, the atom acquires stable electronic configuration of noble gas `(1s^(2)2s^(2)2p^(6))`. Therefore second ionisation enthalpy will be very high.
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