Question $20$

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Which of the following is NOT a valid set of quantum numbers?

Select one:

a$.n=2,l=2,$ and $ml=+1$

b$.n=6,l=5,$ and $ml=0$

c$.$

$n=2,l=1,$ and $ml=+1$

d$.n=3,l=2,$ and $ml=-2$