Which of the following is not permissible arrangement of electrons in an atom?

Which of the following is not permissible arrangement of electrons in an atom?
  1. $n=5, l=3, m=0, s=+1 / 2$
  2. $n=3, l=2, m=-3, s=-1 / 2$
  3. $n=3, l=2, m=-2, s=-1 / 2$
  4. $n=4, l=0, m=0, s=-1 / 2$

Solution

$m=-l$ to $+l$, through zero thus for $l=2$ values of $m$ will be $-2,-1,0,+1,+2$
Therefore for $l=2, m$ cannot have the value $-3$

Asked in: JEE-TOPICTESTS-CHEMISTRY

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