Question

An electron in an atom can be completely designated with the help of four quantum numbers. Out of these, the first three i.e., principal (n), azimuthal (l) and magnetic (m) quantum number are obtained from the solution of Shrodinger wave equation while the spin(s) quantum number arises from the spin of the electron around its axis clockwise or antiaclockwise. Ot of these principal quantum number tells about the size, azimuthal quantum number about the shape and magnetic quantum signifies the orientation of the electron orbital.
The maximum number of electrons in a subshell having the same value of spin quantum number is given by
A. l+2
B. 2l+1
C. l(l+1)
D. `sqrt(l(l+l))`

Answer 1

Correct Answer - B
No. of orbitals in a sub-shell = 2l+1 , Each of these can have one electron having the same value of spin. Therefore, the no. of electrons = (2l+1).