Question text
37 Which statement about the half-life of a radioactive isotope is correct? A Half-life is half the time it takes for the mass of the isotope to decrease to zero. B Half-life is half the time it takes for the number of nuclei of the isotope to decrease to zero. C Half-life is the time taken for the nucleon number of the isotope to halve. D Half-life is the time taken for the number of nuclei of the isotope to halve.
37 Which statement about the half-life of a radioactive isotope is correct?
A Half-life is half the time it takes for the mass of the isotope to decrease to zero.
B Half-life is half the time it takes for the number of nuclei of the isotope to decrease to zero.
C Half-life is the time taken for the nucleon number of the isotope to halve.
D Half-life is the time taken for the number of nuclei of the isotope to halve.
Select your answer: