General Science Chemistry MCQs

Q.  What is the half-life of Radium-223 isotope?

a. 3 days
b. 5 days
c. 11.4 days
d. 9.5 days


ANSWER: See Answer
 
The half-life of Radium-223 isotope is 11.4 days. The radium-226, which is a more common isotope of Radium and which wad discovered by the Curies, has a 1601-year half-life.
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