Assertion :Both $L i$ and $M g$ combine directly with $N_{2}$ to give nitrides $L i_{3} N$ and $M g_{3} N_{2}$ . Reason: Nitrides of both $L i$ and $M g$ are decomposed by water to give $N H_{3}$ .

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Both Assertion and Reason are incorrect

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Solution

The correct option is B Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
Both $L i$ and $M g$ combine directly with $N_{2}$ to give nitrides $L i_{3} N$ and $M g_{3} N_{2}$ .Both the nitrides are decomposed by water to give $N H_{3}$ .
$L i_{3} N + 3 H_{2} O ⟶ 3 L i O H + N H_{3}$
$M g_{3} N_{2} + 6 H_{2} O ⟶ 3 M g (O H)_{2} + 2 N H_{3}$

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Similar questions

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(a) Assertion and reason both are correct and reason is correct explanation of assertion.
(b) Assertion and reason both are wrong statements.
(c) Assertion is correct statement but reason is wrong statement.
(d) Assertion is wrong statement but reason is correct statement.
(e) Both assertion and reason are correct statements but reason is not correct explanation of assertion.

Assertion

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Reason

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Assertion :Both Li and Mg combine directly with N2 to give nitrides Li3N and Mg3N2. Reason: Nitrides of both Li and Mg are decomposed by water to give NH3.

The correct option is B Both Assertion and Reason are correct but Reason is not the correct explanation for AssertionBoth Li and Mg combine directly with N2 to give nitrides Li3N and Mg3N2.Both the nitrides are decomposed by water to give NH3. Li3N+3H2O⟶3LiOH+NH3Mg3N2+6H2O⟶3Mg(OH)2+2NH3

Assertion :Both $L i$ and $M g$ combine directly with $N_{2}$ to give nitrides $L i_{3} N$ and $M g_{3} N_{2}$ . Reason: Nitrides of both $L i$ and $M g$ are decomposed by water to give $N H_{3}$ .