Point out the anugular momentum of an electron in,
(a) `4s` orbital (b) `3p` orbital (c ) `4^(th)` orbit )according to Bohr model)

Explanation

Angular momentum in an orbital `=h/(2pi)sqrt(l(l+1)l)`
a. l=0 for 4 s orbital, hence orbital angular momentum =0
b. l=1 for 3 p orbital
`:.`Angular momentum `=h/(2pi)sqrt((1+1)x1)=h/(sqrt(2)pi)`
c. Angular momentum in 4th obrit.
`=(nh)/(2pi)=(4h)/(2pi)=(2h)/(pi)`