MCQ
What is the electronic configuration of $C{u^{2 + }}(Z = 29)$ of least position
- A$[Ar]\,4{s^1}3{d^8}$
- B$[Ar]\,4{s^2}3{d^{10}}4{p^1}$
- C$[Ar]\,4{s^1}3{d^{10}}$
- ✓$[Ar]\,3{d^9}$
✓
Answer
Correct option: D.
$[Ar]\,3{d^9}$
d
(d) $_{29}Cu = [Ar]\,3{d^{10}}4{s^1},\,C{u^{2 + }} = [Ar]\,3{d^9}.4{s^0}$.
(d) $_{29}Cu = [Ar]\,3{d^{10}}4{s^1},\,C{u^{2 + }} = [Ar]\,3{d^9}.4{s^0}$.
Ground state of $C{u^{29}} = 1{s^2}2{s^2}2{p^6}3{s^2}3{p^6}3{d^{10}}4{s^1}$ $C{u^{2 + }} = 1{s^2},2{s^2}2{p^6},3{s^2}3{p^6}3{d^9}$.
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