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Question: Answered & Verified by Expert
Assertion : $R_3 \mathrm{P}=\mathrm{O}$ exists but $R_3 \mathrm{~N}=\mathrm{O}$ does not exist.
Reason : $\mathrm{P}$ is more electronegative than $\mathrm{N}$.
ChemistryClassification of Elements and Periodicity in PropertiesAIIMSAIIMS 2011
Options:
  • 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.
Solution:
1530 Upvotes Verified Answer
The correct answer is: If assertion is true but reason is false.
The electronegativity of $\mathrm{N}(3.0)$ is much higher than $P(2.1)$.

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