GK
NUCLEAR SCIENCE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The half life period of a radioactive element is 100 days. After 400 days, one gm of the element will be reduced to ____ gm.
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1/2
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1/4
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1/8
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1/16
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Explanation:
Detailed explanation-1: -Hence, the half-life of the radioactive substance is 10 days.
Detailed explanation-2: -As both Half-life and decay-constant remains constant. So in this case, it will remain 100 days always. Was this answer helpful?
Detailed explanation-3: -The correct answer is 140 days.
Detailed explanation-4: -The half-life of a reaction is the time required for the reactant concentration to decrease to one-half its initial value. The half-life of a first-order reaction is a constant that is related to the rate constant for the reaction: t1/2 = 0.693/k.
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