Question

The nuclei of tritium $\left(H^3\right)$ atom would contain neutrons equal to:

• A. $1$
• B. $2$
• C. $3$
• D. $4$

Answer 1

Answer: (B)

$2$

The atomic number and the mass number of tritium are $1$ and $3$ respectively. Tritium contains $1$ electron, $1$ proton and $2$ neutrons.