Question

Differentiate between the properties of isotopes of hydrogen.

Answer 1

Isotopes:

The atoms of the same element having the same atomic number but different mass numbers are known as isotopes. i.e. same number of protons but different numbers of neutrons.

Isotopes of hydrogen:

Hydrogen has three isotopes

Isotopes	Number of protons	Number of neutrons	Atomic number	Mass number	Representation
Protium	$1$	$0$	$1$	$1$	${}_1{}^1\mathrm{H}$
Deuterium	$1$	$1$	$1$	$2$	${}_1{}^2\mathrm{H}$
Tritium	$1$	$2$	$1$	$3$	${}_1{}^3\mathrm{H}$