A radioactive element has a half life of one day. After three days the amount of the element left will be :

Options

A. 1.2 of the original amount
B. 1.4 of the original amount
C. 1.8 of the original amount
D. 1/16 of the original amount

Answer

C

Explanation

`n = (3)/(1) = 3, N = (N_(0))/(2^(3)) = (1)/(8)`