What are the values of the orbital angular momentum of an electron in the orbitals 1s, 3s, 3d and 2p ?

'l' is Azimuthal Quantum Number

If l=0 =s -subshell

If l=1 =p -subshell

If l=2 =d-subshell

If l=3 =f -subshell

The orbital angular momentum =$\sqrt{\mathrm{l}(\mathrm{l}+1)} \stackrel{-}{\mathrm{h}}$

For s -subshell l=0 i.e for 1s,3s

For 3d -subshell l=2 therefore $\sqrt{\mathrm{l}(\mathrm{l}+1)} \stackrel{-}{\mathrm{h}}$ =$\sqrt{2(2+1) } \stackrel{-}{h}$ =$\sqrt{6} \stackrel{-}{h}$
For 2p -subshell l=1 therefore $\sqrt{\mathrm{l}(\mathrm{l}+1)} \stackrel{-}{\mathrm{h}}$ =$\sqrt{1(1+1) } \stackrel{-}{h}$ =$\sqrt{2} \stackrel{-}{h}$