Question

A given orbital is labelled by the magnetic quantum number m=-1. This cannot be: 1) s orbital 2) d orbital 3) p orbital 4) f orbital

Answer 1

Given:

A given orbital is labelled by the magnetic quantum number m = -1.  

To find:

This cannot be: 1) s orbital 2) d orbital 3) p orbital 4) f orbital

Solution:

From given, we have,

A given orbital is labelled by the magnetic quantum number m = -1.  

Four quantum numbers can describe an electron in an atom completely and they are:

Principal quantum number (n), Azimuthal quantum number, (ℓ) Magnetic quantum number (mℓ) and Spin quantum number (s)

s subshell

ℓ = 0, mℓ = 0, One s orbital, 2 s orbital electrons  

p subshell

ℓ = 1, mℓ= -1, 0, +1, Three p orbitals, 6 p orbital electrons  

d subshell

ℓ = 2, mℓ= -2, -1, 0, +1, +2, Five d orbitals, 10 d orbital electrons  

f subshell

ℓ = 3, mℓ= -3, -2, -1, 0, +1, +2, +3, Seven f orbitals, 14 f orbital electrons

For s - orbital the value of m is only 0.

So, this cannot be: 1) s orbital