Question

Find the odd one out and explain your choice ( Note: valency is not a criterion)

1. Sulphur, phosphorus, carbon, iodine
2. Copper, lead, zinc, mercury

Answer 1

1. The odd one out of the given choices has to be identified.
2. Iodine. Because other elements are not halogens.
3. Mercury. It is a metal in the liquid state. However, the rest are in solid-state.

Therefore, the answers are (i) Iodine (ii) Mercury