Question

# The principal quantum number and azimuthal quantum number values for the differentiating electron of $$'d'$$ block elements are ................. and .................

A
3 and 2
B
2 and 1
C
1 and 1
D
2 and 2

Solution

## The correct option is A $$3$$ and $$2$$Principal quantum number can be anything  more than $$3$$ as $$d$$ orbital starts from that shell where as in case of azimuthal quantum number that is $$l$$ for$$s = 0;p=1;d=2$$.Hence azimuthal quantum number is $$2$$ for d block elements.Chemistry

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