Question

An impossible set of four quantum number of an electron is:

• A. $n=4,l=2,m=-2,s=+\frac{1}{2}$
• B. $n=4,l=0,m=0,s=+\frac{1}{2}$
• C. $n=3,l=2,m=-3,s=+\frac{1}{2}$
• D. $n=5,l=3,m=0,s=-\frac{1}{2}$

Answer 1

Answer: (C)

$n=3,l=2,m=-3,s=+\frac{1}{2}$

${}^{\prime }{m}^{\prime }$ can only range between $-l$ to $l$
So, according to that:
a) $m$ can be -2, -1, 0, 1, 2
b) $m$ can be 0
c) $m$ can be -2, -1, 0, 1, 2; but given -3, So wrong.
d) $m$ can be -3, -2, -1, 0, 1, 2, 3