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STD 12 - p -Block elements - ll — NEET STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceNEETSTD 12 - p -Block elements - ll4 Marks
MCQ
Assertion : Fluorine exists only in $-\,1$ oxidation state.

Reason : Fluorine has $2s^2\,2p^5$ configuration.

  • A
    If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
  • B
    If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
  • ✓
    If the Assertion is correct but Reason is incorrect.
  • D
    If both the Assertion and Reason are incorrect.
✓

Answer

Correct option: C.
If the Assertion is correct but Reason is incorrect.
c
Highest occupied molecular orbital ($HOMO$) $\Rightarrow \pi^*$ Lowest unoccupied molecular orbital ($LUMO$) $\Rightarrow \sigma^*$ On descending the group gap between $\pi^*$ and $\sigma^*$ decreases.

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