If 4 gm of a radioisotope has a half life period of 10 days, the half – McqOptions

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1.	If 4 gm of a radioisotope has a half life period of 10 days, the half life of 2 gm of the same isotope will be ____________ days?
A.	5
B.	10
C.	20
D.	30
Answer» C. 20

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