A) They are isotopes of each other
B) They have similar electronic configurations
C) They exist in the nature in the ratio of 1 : 2 : 3
D) Their mass numbers are in the ratio of 1 : 2 : 3
Correct Answer: C
Solution :
Actually these exist in the ratio. \[\begin{matrix} \text{Protium} & \text{:} & \text{Deuterium} & : & \text{Tritium} \\ \text{1} & \text{:} & \text{1}\text{.56}\times \text{1}{{\text{0}}^{\text{-2}}} & : & 1\times {{10}^{-17}} \\ \end{matrix}\]
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