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Assertion : .(1)^(3)H isotope does not ...

Assertion : `._(1)^(3)H` isotope does not undergo fusion of the type`._(1)^(3)H+._(1)^(2)Hrarr` as it is rarely found in nature.
Reason : `._(1)^(3)H` has half life of`~~12` years.

A

If both assertion and reason are true and reason is the correct explanation of assertion.

B

If both assertion and reason are true but reason is not the correct explanation of assertion.

C

If assertion is true but reason is false.

D

If both assertion and reason are false.

Text Solution

AI Generated Solution

The correct Answer is:
To solve the given question, we need to analyze both the assertion and the reason provided. ### Step 1: Understand the Assertion The assertion states that the isotope \( _{1}^{3}H \) (tritium) does not undergo fusion with \( _{1}^{2}H \) (deuterium) because it is rarely found in nature. - **Explanation**: Tritium is indeed a rare isotope of hydrogen. It is not stable and is produced in very small quantities in nature, primarily through cosmic ray interactions and in nuclear reactors. ### Step 2: Understand the Reason The reason given is that \( _{1}^{3}H \) has a half-life of approximately 12 years. - **Explanation**: Tritium is radioactive and has a half-life of about 12.3 years, which means it decays over time. This decay contributes to its rarity in nature. ### Step 3: Evaluate the Relationship Between Assertion and Reason - The assertion is true: Tritium is rarely found in nature. - The reason is also true: Tritium has a half-life of about 12 years. - However, the reason does not directly explain why tritium does not undergo fusion with deuterium. The rarity of tritium is due to its production mechanisms rather than its half-life. ### Conclusion Both the assertion and reason are true, but the reason does not correctly explain the assertion. Therefore, the answer is: **Answer**: Both assertion and reason are true, but the reason is not the correct explanation of the assertion.
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