The total number of orbitals associated with the principal quantum number n = 3 is………………… .

Options

A. 9
B. 8
C. 5
D. 7

Answer

A

Explanation

n=3, 1 =0 , `m_1 = 0 ` - one s orbital
n=3 ,1 , `m_1 =-1,0,1 -three p orbitals
n=3, 1=2, `m_1 =-2, -1 , 0, 1,2` - five d orbitials , overall nine orbitals are possible.