1.

An element belongsto group 15 and 3^("rd")period of the periodic table, its electronicconfiguration .

Answer»

`1s^(2)2s^(2)2p^(4)`
`1s^(2)2s^(2)2p^(3)`
`1s^(2)2s^(2)2p^(6)3S^(2)3p^(2)`
`1s^(2)2s^(2)2p^(6)3s^(2)3p^(3)`

Solution :`1s^(2)2s^(2)2p^(6)3s^(2)3p^(3)`


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