How do the isotopes deuterium and tritium different?

Answer 1

All hydrogen atoms of any kind have one proton in the nucleus. The number of neutrons differ for the 3 isotopes.

Regular hydrogen has no neutrons in the nucleus (1H), deuterium has one neutron (2H), and tritium has two neutrons (3H).

Answer 2

1. Hydrogen
2. 1. notation: 1H
   2. nucleus: 1 proton
   3. mass (AMUs): 1.008145
   4. halflife: infinite, stable
   5. decay mode: none, stable
   1. notation: D or 2H
   2. nucleus: 1 proton and 1 neutron
   3. mass (AMUs): 2.014740
   4. halflife: infinite, stable
   5. decay mode: none, stable
3. Deuterium
   1. notation: T or 3H
   2. nucleus: 1 proton and 2 neutrons
   3. mass (AMUs): 3.017005
   4. halflife: 12.26 years
   5. decay mode: beta at 18 KeV
4. Tritium

Answer 3

They have different numbers of neutrons and therefore different atomic masses.

Normal hydrogen, also known as protium or hydrogen-1 has 1 proton and no neutrons giving it a mass number of 1.

Deuterium, also known as hydrogen-2 has 1 proton and 1 neutron, giving it a mass number of 2.

Tritium, which can also be called hydrogen-3 has 1 proton and 2 neutrons, giving it a mass number of 3. This isotope is radioactive.