Which isotope of hydrogen contains equal number of protons and neutrons ?

Explanation

To determine which isotope of hydrogen contains an equal number of protons and neutrons, we first need to understand the three isotopes of hydrogen:

1. **Protium (¹H)**:
- Number of protons: 1
- Number of neutrons: 0
- Atomic mass: 1 (1 proton + 0 neutrons)

2. **Deuterium (²H)**:
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