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The question consist of two statements e...

The question consist of two statements each, printed as Assertion and Reason. While answering these questions you are required to choose any one of the following four responses:
Assertion: `NF_3` is weaker ligand than `N(CH_3)_3`.
Reason: `NF_3` ionizes to give `F^(-)` ions in aqueous solution.

A

If the both assertion and reason are true and the reason is the correct explanation of the assertion

B

If both assertion and reason are true and the reason is not the correct explanation of the assertion

C

If assertion is true but reason is false

D

If both assertion and reason are false statements.

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question regarding the assertion and reason provided, we need to analyze both statements carefully. ### Step-by-Step Solution: 1. **Understanding the Assertion**: - The assertion states that `NF3` is a weaker ligand than `N(CH3)3` (trimethylamine). - A ligand is a molecule that can donate a pair of electrons to a metal ion. The strength of a ligand often depends on its ability to donate its lone pair of electrons. 2. **Analyzing `NF3`**: - In `NF3`, nitrogen has a lone pair of electrons. However, the electronegativity of fluorine is significantly higher than that of nitrogen. This high electronegativity means that the fluorine atoms will attract the electron density towards themselves, making the lone pair on nitrogen less available for donation. - Therefore, `NF3` does not effectively donate its lone pair, making it a weaker ligand. 3. **Analyzing `N(CH3)3`**: - In `N(CH3)3`, the nitrogen atom is bonded to three methyl groups. The carbon atoms in the methyl groups are less electronegative than nitrogen. This means that the methyl groups can donate electron density to the nitrogen. - As a result, the lone pair on nitrogen in `N(CH3)3` is more available for donation, making it a stronger ligand compared to `NF3`. 4. **Understanding the Reason**: - The reason states that `NF3` ionizes to give `F^(-)` ions in aqueous solution. - However, `NF3` is a stable molecule and does not ionize in water to form fluoride ions. It does not react with water, and thus this statement is incorrect. 5. **Conclusion**: - The assertion is true: `NF3` is indeed a weaker ligand than `N(CH3)3`. - The reason is false: `NF3` does not ionize to give `F^(-)` ions in aqueous solution. - Therefore, the correct response to the question is that the assertion is true, and the reason is false. ### Final Answer: The correct answer is **C**: Assertion is true, but Reason is false.
To solve the question regarding the assertion and reason provided, we need to analyze both statements carefully. ### Step-by-Step Solution: 1. **Understanding the Assertion**: - The assertion states that `NF3` is a weaker ligand than `N(CH3)3` (trimethylamine). - A ligand is a molecule that can donate a pair of electrons to a metal ion. The strength of a ligand often depends on its ability to donate its lone pair of electrons. ...
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