Q. Which of the following pairs has both members of the same period of the Periodic Table?
A) $Na - Cl$
B) $Na - Ca$
C) $Ca - Cl$
D) $Cl - Br$
Explanation
(a)
$Na - Cl$. Both belongs to III period
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.