Question

Which of the following is not a valid set of four quantum numbers

Answer 1

Answer:

The incorrect quantum numbers are $1,1,0,+\frac{1}{2}$

Explanation:

$1,1,0,+\frac{1}{2}$

$n=1,l=1,m_{1}=0,m_{s}=+\frac{1}{2}$

It is not a valid set of quantum number, "l" value cannot be taken from "n" value.

$2,0,0,+\frac{1}{2}$

$n=2,l=0,m_{1}=0,m_{s}=+\frac{1}{2}$

This set of quantum number represents second energy level.

$1,0,0,+\frac{1}{2}$

$n=1,l=0,m_{1}=0,m_{s}=+\frac{1}{2}$

This set of quantum number represents first energy level.

$2,1,0,-\frac{1}{2}$

$n=2,l=1,m_{1}=0,m_{s}=-\frac{1}{2}$

This set of quantum number represents 2p energy level.

$3,0,0,-\frac{1}{2}$

$n=3,l=0,m_{1}=0,m_{s}=-\frac{1}{2}$

This set of quantum number represents third energy level.

Therefore, The incorrect quantum numbers are $1,1,0,+\frac{1}{2}$