Question

The orbital angular momentum of electron in 4s orbital is

Answer 1

Hii dear,
Angular momentum comprises of orbital and spin angular momentum.

# Orbital angular momentum -
Orbital angular momentum is the component of angular momentum of an electron in an atom arising from its orbital motion rather than from its spin.

# Formula-
The orbital angular momentum is given by formula-
orbital angular momentum = h/2π √l(l+1)
where h=plank constant
l=Azimuthal quantum number

For s orbital
l = 0
Hence,
orbital angular momentum = h/2π √0(0+1)
orbital angular momentum = 0

Thus orbital angular momentum of electron in 4s orbital will be zero.

Thanks for asking...

Answer 2

Answer:

$0$

Explanation:

$h/2\pi *\sqrt{l(l+1)}\\=h/2\pi *\sqrt{0*1}\\=h/2\pi *\sqrt{0} \\=h/2\pi* 0\\=0$