(a(i))[1]
State what kind of particle a β-particle is.
(a(ii))[2]
State two characteristics of β-radiation.
(a(iii))[1]
Explain what is meant by spontaneous radioactive decay.
(b)[2]
The equation below shows the decay of a hydrogen-3 nucleus by emission of a β-particle. Complete the equation: $^{3}_{1}\text{H} \rightarrow \; ^{\;\;}_{\;\;}\text{He} + \; ^{\;\;}_{\;\;}\beta$.
(c)[3]
A β-particle is emitted with an energy of $5.7 \times 10^{3}\,\text{eV}$. Calculate the speed of the β-particle.
(d)[2]
Hydrogen-2 (deuterium) is another isotope of hydrogen. Describe the ways in which hydrogen-2 and hydrogen-3 atoms are alike and how they are different.