MCQ
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
  • A
    $s$-block element
  • B
    $p$-block element
  • $d$-block element
  • D
    Inert gas

Answer

Correct option: C.
$d$-block element
c
$(c)$ $d$-block. As the last ${e^ - }$ enters in $d$-subshell.

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