Hydrogen gains an electron to achieve the configuration of a noble gas. It behaves like which of the following?

Hydrogen iodide cannot be prepared by the action of concentrated $H_2SO_4$ on potassium iodide because:

With which of the following does hydrogen combine directly?

Hydrogen has three isotopes: protium $(^{1}H)$,deuterium ($^{2}H$ or $D$),and tritium ($^{3}H$ or $T$). They have nearly same chemical properties but different physical properties. They differ in......

Explain the isotopes of hydrogen in short.

Which is the lightest gas?