Question

One reaction which might be used for controlled nuclear fusion is shown ${}_3^{7}Li{+}_1^{2}H\to 2{(}_2^{4}He)+X$
What is particle X?

• A. an $\alpha$ - particle
• B. an electron
• C. a neutron
• D. a proton

Answer 1

The correct option is C

a neutron

By conservation of mass number and atomic number, the nuclear reaction equation may be re-written as ${}_3^{7}Li{+}_1^{2}H\to 2{(}_2^{4}He){+}_0^{1}n$

The particle X is a neutron