Which of the following statement are correct ?A. The electronic configuration of Cr is `[Ar]3d^(5)4s^(1)`(atomic number of Cr is `24)`B. The magnetic quantum number may have a negative valueC. In silver atom `23` electron have spin of one type and `24` of the opposite type (atomic number of `Ag is 47)`D. The oxidation state of nitrogen in `HN_(3)` is `-3`

Which of the following statement are correct ?A. The electronic config

1.	Which of the following statement are correct ?A. The electronic configuration of Cr is `[Ar]3d^(5)4s^(1)`(atomic number of Cr is `24)`B. The magnetic quantum number may have a negative valueC. In silver atom `23` electron have spin of one type and `24` of the opposite type (atomic number of `Ag is 47)`D. The oxidation state of nitrogen in `HN_(3)` is `-3`
Answer» Correct Answer - A::B::C `Cr(Z = 24)` `[Ar]3d^(6)4s^(1)` This is because `d^(5)` is a more half -filled configuration Reason for the stablity of half-filled and fallty filled ortained are symmetry and excharge energy For every value of l m can be fromn -l to + l through 0, `Ag(z = 47)` The oxidation state of N in `HN_(3)` is not `- 3`but `- 1//3`

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