Which best describes a radioactive isotope?
2 answers:
Answer: Option (A) is the correct answer.
Explanation:
An isotope with an unstable nucleus which decomposes readily and results in the emission of radiation and a nuclear electron or helium nucleus achieves a stable nuclear composition is known as a radioactive isotope.
For example,
Here isotope of polonium decomposes in order to achieve a stable nuclear composition.
Thus, we can conclude that an atom is unstable best describes a radioactive isotope.
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Explanation:
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Answer:
Explanation:
Required
The units of A and B
From the question, we understand that:
This implies that each of and
will have the same unit as
So, we have:
The unit of t is (s); So, the expression becomes
Divide both sides by