JEE MAIN - Chemistry (2021 - 20th July Evening Shift - No. 5)

Outermost electronic configuration of a group 13 element, E, is 4s2, 4p1. The electronic configuration of an element of p-block period-five placed diagonally to element, E is :
[Kr] 3d10 4s2 4p2
[Ar] 3d10 4s2 4p2
[Xe] 5d10 6s2 6p2
[Kr] 4d10 5s2 5p2

Explanation

The element E is Ga and the diagonal element of 5th period is $${}_{50}Sn$$ having outer electronic configuration will be [Kr] 4d10 5s2 5p2.

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