JAMB - Chemistry (2024 - No. 37)

The most common isotope of hydrogen, making up more than 99.98% of all hydrogen in the universe. Protium is the lightest isotope of hydrogen and is also known as ordinary hydrogen. Its symbol is 1H. However, the highest isotope of Hydrogen is Tritium \(^3\)T with 1 proton and 2 neutrons.