Question

For the principle quantum number n=3 what are the permitted values of spiritual quantum number. show that for n=3 the maximum number of electrons in this level is equal to 18​

Answer 1

Explanation:

For n=3

l= 0 to 3-1 which are 0,1,2(Azimuthal quantum number)

spin quantum number can be +-1/2

total number of orbitals = n² = 3²

Since, 1 orbital has 2 electrons.

Therefore, n² orbitals will have 2n² electrons = 2×3²

= 18 electrons.