Question

Give the name and symbol of the non-metal which is liquid at room temperature.

Answer 1

Hint: A nonmetal is typically brittle when solid and usually has poor thermal conductivity and electrical conductivity. Chemically, nonmetals tend to have relatively high ionization energy, electron affinity, and electronegativity. They gain or share electrons when they react with other elements and chemical compounds.

Complete step by step solution:
We have been asked about a non-metal which is liquid at room temperature,
So, for that:
Corresponding to periodic trends it is intermediate in electronegativity between chloride and iodine. It is less reactive than chlorine and more reactive than iodine. Conversely, the bromine ion is a weaker reducing agent than iodine, but stronger than chloride. These similarities led to chlorine, bromine and iodine together being classified as one of the original triads of Johann Wolfgang Dobereiner whose work foreshadowed the periodic law for chemical elements. Bromine is liquid at room temperature, bromine is represented as Br.
This is because the intermolecular forces are strong enough so that it does not evaporate. Bromine forms diatomic molecules and Van der Waals interactions are sufficiently strong. The volatility of bromine accentuates its very penetrating, choking and unpleasant odour. Whereas, the other halogens are gases.

So, we can say that bromine is the only non-metal that is liquid at room temperature. It is one of the only two elements on the periodic table that are liquid at room temperature other than mercury.

Note: Mercury is the only metal that is a liquid at normal temperatures and pressure. Basically, it is because mercury is bad at sharing—electrons. Most metal atoms readily share valence electrons with other atoms. The electrons in a mercury atom are bound more tightly than usual to the nucleus