Q. An element belongs to group 15 and third period of the periodic table. Its electronic configuration will be
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}
Explanation
(c)
General valence shell electronic configuration of 15 th group elements is ns^{2} np^{3} where n=period number.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.