Q. Choose CORRECT outer electronic configuration of $Cu,Cr\&Pd$ are respectively.
NTA AbhyasNTA Abhyas 2022
Solution:
Fully filled and half-filled orbitals are more stable.
The configurations are given below.
Copper: [ $Ar$ ] $3d^{10}4s^{1}$ so the outer electronic configuration is $3d^{10}4s^{1}$
Chromium: $\left[\right.Ar\left]\right.3d^{5}4s^{1}$ so the outer electronic configuration is $3d^{5}4s^{1}$
Palladium: $\left[\right.Kr\left]\right.4d^{10}5s^{0}$ so the outer electronic configuration is $4d^{10}5s^{0}$
The configurations are given below.
Copper: [ $Ar$ ] $3d^{10}4s^{1}$ so the outer electronic configuration is $3d^{10}4s^{1}$
Chromium: $\left[\right.Ar\left]\right.3d^{5}4s^{1}$ so the outer electronic configuration is $3d^{5}4s^{1}$
Palladium: $\left[\right.Kr\left]\right.4d^{10}5s^{0}$ so the outer electronic configuration is $4d^{10}5s^{0}$