Atomic number of 15, 33,51 represents the following family:

Options

A. carbon family
B. nitrogen family
C. oxygen family
D. None of these

Answer

B

Explanation

`Z = 15 = 1s^(2) 2s^(2) 2p^(6)3s^(2)3p^(3)`, so element belongs to p-block. Thus its group number will be `10 +2 +3 = 15`.
`Z = 33 = 1s^(2)2s^(2)2p^(6)3s^(6)3d^(1-)4s^(2)4p^(3)`, so element belongs to p-block. Thus its group number will be `10 +2 +3 = 15`.
`Z = 51 = [Kr]^(36) 4d^(10) 5s^(2) 5p^(3)`, so element belongs to p-block. Thus its group number will be `10 +2 +3 = 15`.
Hence, all these elements belongs to `15^(th)` group i.e nitrogen family.