The half life of a radio -isotope is four hour. If the initial mass of the isotope was 20g,the mass left after 24 hours undecayed is

Question

The half life of a radio -isotope is four hour. If the initial mass of the isotope was 20g,the mass left after 24 hours undecayed is

The half life of a radio -isotope is four hour. If the initial mass of the isotope was 20g,the mass left after 24 hours undecayed is
A. 4.167 g
B. 2.084g
C. 3.125g
D. 1.042g

Monjur Alahi

4 views

2025-01-04 04:42

1 Answers

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Salim Ahmed Kawsar · Accepted Answer · 2023-02-05T15:29:48+06:00

Salim Ahmed Kawsar

Correct Answer - c
`N""_("left")=(N""_(0))/(2""_(n))=200/2""^(6)=3.125g`

4 views Answered 2023-02-05 15:29