Question

The principal and azimuthal quantum number of electrons in $4f$ orbitals are

• A. 4,2
• B. 4,4
• C. 4,3
• D. 3,4

Answer 1

Answer: (C)

For $4f$ electron
[Principal quantum number $(n)=4$ Azimuthal quantum number $(l)=3$]
$\left[\begin{array}{cc}1=0& s\\ I=1& p\\ 1=2& d\\ l=3& f\end{array}\right]$