Which of the following is false?
- AHydrogen atom is roughly a third of the mass of tritium
- BDeuterium is called heavy hydrogen
- CDeuterium atom has 1 neutron
- DProtium is the rarest isotope of hydrogen
Solution & Step-by-step Explanation
Hydrogen has three primary isotopes:
Protium (
1
H): Has 1 proton, 0 neutrons. It is the most common and abundant isotope of hydrogen (>99.98%). Thus, the statement that "Protium is the rarest isotope" is false.
Deuterium (
2
H or D): Has 1 proton, 1 neutron. It is known as heavy hydrogen.
Tritium (
3
H or T): Has 1 proton, 2 neutrons. Its mass is roughly three times that of a protium (standard hydrogen) atom.
Protium (
1
H): Has 1 proton, 0 neutrons. It is the most common and abundant isotope of hydrogen (>99.98%). Thus, the statement that "Protium is the rarest isotope" is false.
Deuterium (
2
H or D): Has 1 proton, 1 neutron. It is known as heavy hydrogen.
Tritium (
3
H or T): Has 1 proton, 2 neutrons. Its mass is roughly three times that of a protium (standard hydrogen) atom.