Question

Which of the following are valid regarding radioactive decay? If a statement is invalid, write a brief statement indicating why.

(a) It obeys an exponential decay according to N(t) = N0e − t τ = N0 2 t/t1/2

(b) It involves three types of decay: α, β, γ in which α, β, and γ ray particles are emitted in the decay. Their identities were unknown at the time of their discovery.

(c) α rays are really negatively charged Helium nuclei

(d) The lifetime of a particle is the same as its half-life

Answer 1