Which of the following statement(s) is (are) correctA. The electronic configuration of Cr is `[Ar] 3d^5 4s^1` (Atomic Number of Cr =24)B. The magnetic quantum number may have a negative valueC. In silver atom, 23 electrons have a spin of one type and 24 of the opposite type . (Atomic Number of Ag=47)D. The oxidation state of nitrogen in `HN_3` is -3

Which of the following statement(s) is (are) correctA. The electronic

1.	Which of the following statement(s) is (are) correctA. The electronic configuration of Cr is `[Ar] 3d^5 4s^1` (Atomic Number of Cr =24)B. The magnetic quantum number may have a negative valueC. In silver atom, 23 electrons have a spin of one type and 24 of the opposite type . (Atomic Number of Ag=47)D. The oxidation state of nitrogen in `HN_3` is -3
Answer» Correct Answer - A::B::C `._24Cr=1s^2 , 2s^2 sp^6 , 3s^2 3p^6 3d^5, 4s^1 =[Ar] 3d^5 , 4s^1` For magnetic quantum number (m), negative values are possible For s-subshell, l=0 , hence m=0 For p-subshell, l=1 , hence m=-1,0,+1 `._47Ag=1s^2 ,2s^2 2p^6 , 3s^2 3p^6 3d^10 , 4s^2 4p^6 4d^10 , 5s^1` Hence 23 electrons have a spin of one type and 24 of the opposite type. oxidation state of N in `NH_3` is -1/3

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