MHT CET Chemistry Question (2026) — Solution

Step-by-step solution

Hydrogen has three isotopes: Protium (^ 1 H), Deuterium (^ 2 H), and Tritium (^ 3 H). Thus, the statement that it has two isotopes is false. Hydrogen is placed separately in the periodic table due to its anomalous behavior, resembling both alkali metals and halogens. A hydrogen atom consists of one proton and one electron. When it loses its only electron, it forms an H^ + ion, which is a bare proton. Atomic hydrogen is highly reactive and does not exist freely in nature; it exists as a diatomic molecule (H_2) or in combined states.