Characterize EACH of the three given statements as being TRUE or FALSE and then indicate the collective true-false status of the statements using the choices: (1) Radioactive nuclides produced by bombardment reactions obey the same laws as naturally-occurring radioactive nuclides.
(2) The penetrating power of beta particles exceeds that of gamma rays.
(3) After three half-lives have elapsed, three-fourths of a radioactive sample would have decayed.

Question

Quizplus · Accepted Answer

1) True - Radioactive nuclides, whether produced artificially or occurring naturally, follow the same fundamental laws of radioactivity, such as decay rates and modes. 2) False - Gamma rays have a greater penetrating power than beta particles due to their lack of mass and charge. 3) False - After three half-lives, an eighth (1/8) of the original sample remains, meaning seven-eighths (7/8) has decayed, not three-fourths.

Characterize EACH of the Three Given Statements as Being TRUE