WAEC - Physics (2021 - No. 18)
An atom that emits an a-particle?
may become a different element.
becomes a different isotope of the element.
daughter with increased mass.
becomes a daughter of a different element always.
ব্যাখ্যা
Alpha decay or α-decay is a type of radioactive decay in which an atomic nucleus emits an alpha particle (helium nucleus) and
thereby transforms or 'decays' into a different atomic nucleus, with a mass number that is reduced by four and an atomic number that is reduced by two.