Question

Which of the following is the best definition of half-life for a radioactive substance?
A. Half of the amount of time required for all of the radioactive atoms to decay.
B. The amount of time required for half of the radioactive atoms to decay.
C. The amount of time required for each radioactive atom to decay halfway.
D. All of the above.

Answer 1

Answer:

Option D

Explanation:

Answer 2

Answer:

Correct option is -

B. The amount of time required for half of the radioactive atoms to decay

Explanation:

Half life is defined as the amount of time required for the half process to occur. The best example for this is the radioactive decay. In this case, half life of radioactive substance is defined as the time required for the decay of half of its atomic nuclei. In simple language, the total time it takes to disintegrate half of the substance is called it half-life.