What is the maximum number of electron in an atom that can have the quantum numbers `n = 4, m_(l) =+1`?

Options

A. 4
B. 15
C. 3
D. 6

Answer

D

Explanation

n=4, l=1,`m_(2)=0`
`l=1,m_(e)=-1,0,+1`
`l=2,m_(2)=-2,-1,0,+1,+2`
`l=3,m_(e)=-3,-2,-1,0,+1,+2,+3`
There are three orbitals having `m_(e)=+1`, thus maximum number of electrons in them will be 6.