Question

Two deuterons combine to form a tritium nucleus and a __

• A. $\alpha$-particle
• B. Fast neutron
• C. Proton
• D. $\beta$ -particle

Answer 1

The correct option is C Proton

The given nuclear reaction is-

${}_1^{2}H{+}_1^{2}H{\to }_1^{3}H{+}_Z^{A}X$

where $A$ and $Z$ are the mass number and atomic number of element $X$, respectively.

Conservation of mass number : $2+2=3+A$

$⟹$ $A=1$

Conservation of atomic number : $1+1=1+Z$

$⟹$ $Z=1$

Thus the element $X$ is a proton i.e. ${}_1^{1}H$.