Which fo the following statement (s) is are correct ?A. The electronic configruation of ` cr` is `[Ar] 3d^5 m 4s^1`B. The magnetic quatum no. may have abegative valueC. In silve atom ` 23` eelctrons have a spin of one type and ` 24` of the oppositive type ( an. of . Ag is 74)D. The oxidation no. of nitrogen in ` N_3 H ` is ` -3`

Which fo the following statement (s) is are correct ?A. The electronic

1.	Which fo the following statement (s) is are correct ?A. The electronic configruation of ` cr` is `[Ar] 3d^5 m 4s^1`B. The magnetic quatum no. may have abegative valueC. In silve atom ` 23` eelctrons have a spin of one type and ` 24` of the oppositive type ( an. of . Ag is 74)D. The oxidation no. of nitrogen in ` N_3 H ` is ` -3`
Answer» Correct Answer - A::B::C `._(24)Cr: 1s^2 , 2s^2 2p^6 , 3s^2 3p^6 3d^5 4s^1` (d-acquires half -filled notrue ) `m=- l` to `+ l` include zero In silver `._(47)Ag: 1s^2 , 2s^2 3p^6 , 3s^2 3p^6 3d^(10)` `4s^2, 4p^6 4d^(10) , 5s^1` Thus ` 24` electron have , ` s = + 1//2` while rest ` 23 ` have ` s=- 1//2` .

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