Structure of Atom - Result Question 42
####46. Which of the following is not permissible arrangement of electrons in an atom?
[2009]
(a) $n=5, l=3, m=0, s=+1 / 2$
(b) $n=3, l=2, m=-3, s=-1 / 2$
(c) $n=3, l=2, m=-2, s=-1 / 2$
(d) $n=4, l=0, m=0, s=-1 / 2$
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Solution:
- (b) $m=2 l+1$, thus for $l=2, m=5$, hence values of $m$ will be $-2,-1,0,+1,+2$.
Therefore for $l=2, m$ cannot have the value -3 .
