Question

The element which does not exist in liquid state at room temperature is:

• A. $Na$
• B. $Br$
• C. $Hg$
• D. $Ga$

Answer 1

The correct option is A $Na$

The only liquid elements at standard temperature and pressure are Bromine (Br), and Mercury(Hg).

Although, elements caesium (Cs), rubidium(Rb), francium(Fr) and gallium(Ga) become liquid at or just above room temperature.

Hence, from the above option Sodium $\left(Na\right)$ is in solid state at room temperature.