The radioactive decay constant (in the law of radioactive decay) is also called ______.
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A.
half-life coefficient
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B.
activity constant
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C.
nuclear stability factor
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D.
disintegration constant
Correct Answer:
D. disintegration constant
Explanation:
The radioactive decay constant, symbolized by the Greek letter lambda ($\lambda$), represents the probability per unit time that a specific nucleus will undergo spontaneous transformation. In the context of the law of radioactive decay, this proportionality constant relates the rate of decay to the total number of radioactive nuclei present in a sample. Because it quantifies the rate at which a substance breaks down or disintegrates into more stable forms, it is also frequently referred to as the disintegration constant. While other terms like half-life and activity are related to the decay process, the specific constant used in the exponential decay equation to define the likelihood of an individual decay event is the disintegration constant. Therefore, the correct option is disintegration constant.
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