Question

Identify the elements in the Periodic Table that are liquid at room temperature.

• A. Bromine (Br)
• B. Mercury (Hg)
• C. Helium (He)
• D. Carbon (C)

Answer 1

Answer: (A), (B)

The correct options are
A Bromine (Br)
B Mercury (Hg)

Bromine (Br) and Mercury (Hg) are the only elements that are liquids at room temperature.

The melting point of mercury and bromine are $-{38.8}^{o}C$ and $-{7.2}^{o}C$ respectively. Since they are slightly below room temperature, these metals exist as liquids at that temperature.

The melting point of helium is $-{272.2}^{o}C$. So helium will exist in the liquid state only at very low temperature.

The melting point of carbon is ${3550}^{o}C$ which means that carbon doesn't actually melt.