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Question: A sudden large jump between the values of second and third ionization energies of an element would b...

A sudden large jump between the values of second and third ionization energies of an element would be associated with which of the following electronic configuration?

A

1s2,2s22p6,3s13p21s^{2},2s^{2}2p^{6},3s^{1}3p^{2}

B

1s2,2s22p6,3s23p11s^{2},2s^{2}2p^{6},3s^{2}3p^{1}

C

1s2,2s22p6,3s11s^{2},2s^{2}2p^{6},3s^{1}

D

1s2,2s2,2p6,3s21s^{2},2s^{2},2p^{6},3s^{2}

Answer

1s2,2s2,2p6,3s21s^{2},2s^{2},2p^{6},3s^{2}

Explanation

Solution

: A sudden large jump between the values of 2nd and 3rd ionisation energies of an element indicates, that the element has two electrons in its valence shell. Then, the possible electronic configuration may be.

1s2,2s22p6,3s21s^{2},2s^{2}2p^{6},3s^{2}