Question

A. Circle (sahi) the odd-one out giving appropriate reason.
1. Hydrogen, Oxygen, Sulphur, Arsenic, Chlorine
2. Dull, Non-conductor, Brittle, Metal, Non-metal
3. Iron, Zinc, Magnesium, Copper, Sodium​

Answer 1

Answer:

1.

Explanation:

chlorine

dull

sodium