An element belong to group-15 and third period of the periodic table. Its electronic configuration will be-

Options

A. `1s^(2)2s^(2)2p^(3)`
B. `1s^(2)2s^(2)2p^(4)`
C. `1s^(2)2s^(2)2p^(6)3s^(2)3p^(3)`
D. `1s^(2)2s^(2)2p^(6)3s^(2)3p^(2)`

Answer

C

Explanation

Electronic configuration of the valence shell of group 15 elements in the periodic table is `ns^(2)sp^(3), where n is the period number. Therefore, the element located in the third period has the electronic configuration `1s^(2)2s^(2)2p^(6)3s^(2)3p^(3)`.