A) \[4.0\times {{10}^{18}}atoms\]
B) \[205\times {{10}^{15}}atoms\]
C) \[3.5\times {{10}^{7}}atoms\]
D) \[4.7\times {{10}^{10}}atoms\]
Correct Answer: A
Solution :
\[\because \] \[1Ci=\frac{6.023\times {{10}^{23}}}{226}\]atoms \[\therefore \]\[1.5\times {{10}^{-3}}=\frac{1.5\times {{10}^{-3}}\times 6.023\times {{10}^{23}}}{226}\] \[=3.997\times {{10}^{18}}atoms\]
You need to login to perform this action.
You will be redirected in
3 sec
