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Assertion : F atom has less negative electron gain enthalpy than Cl atom                 [JEE 2000]
Reason : Additional electron is repelled more efficiently by 3p electron in Cl atom than by 2p electron in F atom.
  • a)
    If both, assertion and reason are CORRECT, and reason is the CORRECT explanation of the assertion.
  • b)
    If both assertion and reason are CORRECT, but reason is not the CORRECT explanation of the assertion.
  • c)
    If assertion is CORRECT but reason is INCORRECT
  • d)
    If assertion is INCORRECT but reason in CORRECT.
Correct answer is option 'C'. Can you explain this answer?
Most Upvoted Answer
Assertion :F atom has less negative electron gain enthalpy than Cl ato...
When flourine accept electron then due to its small size and absence of d orbital its repels the electron which results in less negative electron gain enthalpy whereas in reason it should be vice versa
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Community Answer
Assertion :F atom has less negative electron gain enthalpy than Cl ato...
Assertion and Reason Overview
The assertion states that the F atom has a less negative electron gain enthalpy than the Cl atom, while the reason provided explains that this is due to the repulsion experienced by the additional electron in Cl, which is influenced by the 3p electrons.
Understanding Electron Gain Enthalpy
- Electron Gain Enthalpy: This is the energy change when an electron is added to a neutral atom. A more negative value indicates a greater tendency to gain an electron.
- Fluorine (F): Has a high electron gain enthalpy due to its small size and high effective nuclear charge.
- Chlorine (Cl): Although larger than F, Cl also has a high affinity for electrons, but not as high as that of F.
Analyzing the Assertion
- The assertion is CORRECT. Fluorine indeed has a less negative electron gain enthalpy compared to chlorine. This is because, despite fluorine's high electronegativity, the electron-electron repulsion in its compact structure reduces the overall attraction for an additional electron.
Analyzing the Reason
- The reason is INCORRECT. While the presence of 3p electrons in Cl does cause some repulsion, it is not the primary reason for the difference in electron gain enthalpy. Instead, the smaller size of fluorine and the corresponding higher electron-electron repulsion in its vicinity play a more significant role.
Conclusion
- Therefore, the correct answer is option 'C': the assertion is CORRECT, but the reason is INCORRECT. This highlights the need for a deeper understanding of atomic structure and electron interactions in different elements.
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Assertion :F atom has less negative electron gain enthalpy than Cl atom [JEE 2000]Reason :Additional electron is repelled more efficiently by 3p electron in Cl atom than by 2p electron in F atom.a)If both, assertion and reason are CORRECT, and reason is the CORRECT explanation of the assertion.b)If both assertion and reason are CORRECT, but reason is not the CORRECT explanation of the assertion.c)If assertion is CORRECT but reason is INCORRECTd)If assertion is INCORRECT but reason in CORRECT.Correct answer is option 'C'. Can you explain this answer?
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Assertion :F atom has less negative electron gain enthalpy than Cl atom [JEE 2000]Reason :Additional electron is repelled more efficiently by 3p electron in Cl atom than by 2p electron in F atom.a)If both, assertion and reason are CORRECT, and reason is the CORRECT explanation of the assertion.b)If both assertion and reason are CORRECT, but reason is not the CORRECT explanation of the assertion.c)If assertion is CORRECT but reason is INCORRECTd)If assertion is INCORRECT but reason in CORRECT.Correct answer is option 'C'. Can you explain this answer? for JEE 2024 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about Assertion :F atom has less negative electron gain enthalpy than Cl atom [JEE 2000]Reason :Additional electron is repelled more efficiently by 3p electron in Cl atom than by 2p electron in F atom.a)If both, assertion and reason are CORRECT, and reason is the CORRECT explanation of the assertion.b)If both assertion and reason are CORRECT, but reason is not the CORRECT explanation of the assertion.c)If assertion is CORRECT but reason is INCORRECTd)If assertion is INCORRECT but reason in CORRECT.Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Assertion :F atom has less negative electron gain enthalpy than Cl atom [JEE 2000]Reason :Additional electron is repelled more efficiently by 3p electron in Cl atom than by 2p electron in F atom.a)If both, assertion and reason are CORRECT, and reason is the CORRECT explanation of the assertion.b)If both assertion and reason are CORRECT, but reason is not the CORRECT explanation of the assertion.c)If assertion is CORRECT but reason is INCORRECTd)If assertion is INCORRECT but reason in CORRECT.Correct answer is option 'C'. Can you explain this answer?.
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