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Chem Chemistry

ChemistryNEB 2074 (old course)

Which one is the least abundant isotope of hydrogen. Mention its two uses. [1+1]

2

Answer

· Based on the official syllabus and past papers
Updated

The least abundant isotope of hydrogen is tritium (³H).

Uses of Tritium:

  1. Nuclear Fusion Research: Tritium is used as a fuel in nuclear fusion reactions, particularly in experimental reactors like tokamaks, where it combines with deuterium (²H) to produce helium and release energy.
  2. Self-Luminous Exit Signs: Tritium is used in self-powered light sources (e.g., exit signs) due to its beta radiation, which excites phosphorescent material to produce a faint glow without electricity.

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