The atomic numbers and mass numbers of the nuclei of hydrogen, deuterium and tritium, respectively are in the ratio

1:1:1 and 1:2:3

The correct answer is Option (3) → 1:1:1 and 1:2:3

Hydrogen (H): atomic number = 1, mass number = 1

Deuterium (D): atomic number = 1, mass number = 2

Tritium (T): atomic number = 1, mass number = 3

Ratio of atomic numbers: $1:1:1$

Ratio of mass numbers: $1:2:3$

Atomic numbers : 1:1:1, Mass numbers : 1:2:3