Refer to the following figure (first three rows of the periodic table) to answer the questions below.

-Which pair of elements would likely have similar valency and thus similar chemical behavior?
A) nitrogen and phosphorus
B) carbon and nitrogen
C) sodium and chlorine
D) hydrogen and helium

Question

Refer to the following figure (first three rows of the periodic table) to answer the questions below.
 
-Which pair of elements would likely have similar valency and thus similar chemical behavior?
A) nitrogen and phosphorus 
B) carbon and nitrogen 
C) sodium and chlorine 
D) hydrogen and helium

Quizplus · Accepted Answer

The Answer is A

Refer to the Following Figure (First Three Rows of the Periodic