UNIVERSE
SOLAR SYSTEM FORMATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The amount of time it takes for 50% of a sample of a radioactive element to decay is called its:
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decay rate.
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half-life.
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half-blood.
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lifespan.
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Explanation:
Detailed explanation-1: -Instead, the half-life is defined in terms of probability: “Half-life is the time required for exactly half of the entities to decay on average". In other words, the probability of a radioactive atom decaying within its half-life is 50%.
Detailed explanation-2: -The time required for half of the original population of radioactive atoms to decay is called the half-life.
Detailed explanation-3: -After the first half life is passed, 50% of the original radioactive material remains (the other 50% converted to a different element). After the second half life, only 25% of the original radioactive material remains, and after 3 half life, 12.5%, etc.
There is 1 question to complete.