A) \[2\times {{10}^{2}}yr\]
B) \[3\times {{10}^{3}}yr\]
C) \[3.5\times {{10}^{4}}yr\]
D) \[4\times {{10}^{3}}yr\]
Correct Answer: B
Solution :
The half-life period is the time needed by a radioactive element to decay one half of its original weight. It is expressed as half-life \[{{t}_{1/2}}=\frac{0.693}{\lambda }\] \[=\frac{0.693}{2.31\times {{10}^{-4}}}\] \[=0.3\times {{10}^{4}}yr\] \[=3\times {{10}^{3}}yr\]
You need to login to perform this action.
You will be redirected in
3 sec
