Question

Radioactive sample of 1mg
reduce to 0.01 mg in 100 minit.
then ita decay constant is?​

Answer 1

Answer:

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Explanation:

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Answer 2

Answer:

$0.046min^{-1}$

Explanation:

Given:

$A_{r} =1mg\\A_{t} =0.01mg\\t=100min$

λ=$\frac{2.303}{t} * log\frac{A_{o} }{A^{t} }$

$=\frac{2.303}{100} * log\frac{1}{{0.01} }$

λ=$0.046min^{-1}$

Therefore, the Radioactive sample of 1mg reduces to 0.01 mg in 100 minit. then ita decay constant is 0.046

Radioactive Decay:

• Radioactive decay (also known as nuclear decay, radioactivity, radioactive disintegration, or nuclear disintegration) is the process by which an unstable atomic nucleus loses energy through radiation.
• A radioactive substance contains unstable nuclei.
• The three most frequent kinds of decay are alpha decay (-decay), beta decay (-decay), and gamma decay (-decay), all of which entail the emission of one or more particles.
• The weak force governs beta decay, whereas the electromagnetic and nuclear forces regulate the other two.
• At the atomic level, radioactive decay is a stochastic (i.e. random) process.
• It is impossible to anticipate when an atom will decay, according to quantum theory, regardless of how long the atom has existed.
• For a large number of similar atoms, however, the total decay rate can be described as a decay constant or as a half-life.
• Radioactive atom half-lives range from virtually instantaneous to considerably longer than the age of the universe.

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