A radioactive element X converts into another stable element Y. Half-l – McqOptions

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1.	A radioactive element X converts into another stable element Y. Half-life of X is 2 hrs. Initially only X is present. After time t, the ratio of atoms of X and Y is found to be 1 : 4, then t in hours is
A.	2
B.	4
C.	between 4 and 6
D.	6
Answer» D. 6

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