An element has the electronic configuration 1 s^2 ,2 s^2 2 p^6 , … - Vidyadip

Question

An element has the electronic configuration $1{s^2},2{s^2}2{p^6},$ $3{s^2}3{p^6}3{d^5},\,4{s^1}$. It is a

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Answer

c
$(c)$ $d$-block. As the last ${e^ - }$ enters in $d$-subshell.

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