Question

11. What is the maximum number of electrons in an atom when n = 4, and l = 1, m=1 n=3, and I = 0_

Answer 1

a) n = 4, l = 1, m = 1 the set of a quantum number refers to valence electron in the 4p orbital particularly in the p_z orbital as the m_l value is +1

according to Aufbau's Principle

1s

2s 2p

3s 3p 3d

4s 4p 4d 4f

The electron enters to that orbital which has lowest n+l value

Each orbital can contain two electrons with alternate spin

No set of quantum numbers are same, all electron occupation is unique

Before going to the 4p_z orbital electrons start filling in the 1s 2s 2p 3s 3p 4s 3d 4p

Thus 4p_z orbital will contain a maximum of 2 electrons

b) n= 3 , l=0

refers to the 3s orbital

thus 3s orbital can accommodate a total of 2 electrons