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Values of 1^(st) four ionisation energie...

Values of `1^(st)` four ionisation energies `(kJ//mol)` of an element are respectively 496, 4563, 6913, 9541 the electronic configuration of that element can be.

A

`1s^(2), 2s^(1)`

B

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

C

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

D

(3) and (2) both

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The correct Answer is:
C
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