NEET 2023 Phase 2 · ChemistryOxide naturePrevious Year Question
Assertion (A): Lithium and beryllium, unlike their other respective group members, form compounds with pronounced ionic character. Reason (R): Lithium and magnesium have similar properties due to the diagonal relationship.
Answer: (D) (A) is false but (R) is true.. \textbf{Answer:} (D) (A) is false but (R) is true.
- A.Both (A) and (R) are true and (R) is the correct explanation of (A).
- B.Both (A) and (R) are true but (R) is not the correct explanation of (A).
- C.(A) is true but (R) is false.
- D.(A) is false but (R) is true.✓
Correct Answer
(D) (A) is false but (R) is true.
Solution & Explanation
\textbf{Answer:} (D) (A) is false but (R) is true. \textbf{Solution:} Lithium and beryllium, owing to their small size and high polarising power, form compounds with pronounced COVALENT (not ionic) character. Hence the Assertion is false. The Reason is true: and do show similar properties because of the diagonal relationship. Since (A) is false and (R) is true, the correct option is D.
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