1.

Which of the following statement (s) is (are) correct?

Answer»

The electronic configuration of Cr is `[Ar] 3d^(5), 4s^(1)` (Atomic No. of Cr=24)
The magnetic QUANTUM NUMBER may have a NEGATIVE value
In silver atom 23 electrons have spin of one type and 24 of the opposite type (Atomic No. of Ag=47)
The oxidation state of nitrogen in `HN_(3)` is -3

Solution :Only D is wrong because oxidation state of N in `HN_(3)` is -1/3.
Hence A,b and C are the correct ASWER.


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