Question
The electronic configuration of $$Cu\left( {{\text{at}}{\text{.}}\,{\text{no}}{\text{.}} = 29} \right)$$ is
A.
$$1{s^2},2{s^2}2{p^6},3{s^2}3{p^6},4{s^2},3{d^9}$$
B.
$$1{s^2},2{s^2}2{p^6},3{s^2}3{p^6}3{d^{10}},4{s^1}$$
C.
$$1{s^2},2{s^2}2{p^6},3{s^2}3{p^6},4{s^2}4{p^6},5{s^2}5{p^1}$$
D.
$$1{s^2},2{s^2}2{p^6},3{s^2}3{p^6},4{s^2}4{p^6},3{d^3}$$
Answer :
$$1{s^2},2{s^2}2{p^6},3{s^2}3{p^6}3{d^{10}},4{s^1}$$
Solution :
The electronic configuration of $$Cu (29)$$ is an exceptional case due to exchange of energy and symmetrical distribution of electrons in orbital to acquire more stability.
$$ = 1{s^2},2{s^2}2{p^6},3{s^2}3{p^6}3{d^{10}},4{s^1}$$
The electronic configuration of $$Cu (29)$$ is an exceptional case due to exchange of energy and symmetrical distribution of electrons in orbital to acquire more stability.
$$ = 1{s^2},2{s^2}2{p^6},3{s^2}3{p^6}3{d^{10}},4{s^1}$$