Question

The smallest period in the modern periodic table contains ............ elements.

• A. $2$
• B. $4$
• C. $8$
• D. $16$

Answer 1

The correct option is

C

$2$

The smallest period in the modern periodic table is Period-1 which contains only $2$ elements, i.e. $H$ and $He$.

Option (C) is correct.