Q41 / 150 · MHT CET 2026 (19 April Shift 2) · Chemistry
Which of the following statements is false regarding hydrogen ?
- Correct answerAIt has two isotopes.
- BIn periodic table hydrogen is placed separately above group 1.
- CWhen one electron is lost it forms proton.
- DIt does not exist freely.
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.
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.
Hence, the correct answer is option: 'A'.