Question

Consider the ground state of Cr atom (Z = 24). The numbers of electrons with the azimuthal quantum numbers, $\mathcal{l}$ = 1 and 2 are, respectively :

• A. 16 and 5
• B. 12 and 5
• C. 16 and 4
• D. 12 and 4

Answer 1

Answer: (B)

12 and 5

Answer 2

Cr (Zn = 24)

electronic configuration is : 1s2 2s2 2p6 3s2 3p6 4s1 3d5

so, no of electron in $\mathcal{l}$ = 1 i.e. p subshell is 12 and no of electron in $\mathcal{l}$ = 2 i.e. d subshell is 5