Question Detail

CHM 102 Radioactivity Objective Question
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Question

How does the half-life of a radioactive isotope depend on the amount of the isotope present?
Options
A It increases with the amount of isotope.
B It decreases with the amount of isotope.
C It is independent of the amount of isotope.
Correct Answer
D It is directly proportional to the square of the amount of isotope.
Correct Answer

Option C is the correct answer.

Detailed Explanation

Page 9 states: 'The value of half-life is independent of the amount of isotope (i.e. regardless of if we have 1 g or 1000 g of 24Na the half-life is still 15 hrs)'.

Hint

Check the last bullet point on page 9 for information on half-life's dependency on the amount of isotope.

Question Info

Course: CHM 102
Topic: Radioactivity
Type: Objective
Difficulty: Not specified
Question 1863 of 1999
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