A curie is A)the amount of sample that undergoes 1 disintegration per second. B)the amount of sample that undergoes 3.7 × 10¹⁰ disintegrations per second. C)the amount of tissue damage done by radiation. D)equal to 0.01 J of energy absorbed per kilogram of tissue.

Question

Quizplus · Accepted Answer

A curie (Ci) is the unit of measurement for radioactivity. It is defined as the amount of radioactive material that undergoes 3.7 × 10^10 disintegrations per second. This is equivalent to 1 gram of radium-226, which was the original reference material for defining the curie. Option A is incorrect as it refers to the activity of a sample, not a curie. Option C is incorrect as tissue damage is not measured in curies. Option D refers to the absorbed dose of radiation, not the activity of a material in curies.

A Curie Is