Assertion: Most ionic solids have high melting points.
Reason: Ionic solids are made by electrostatic attraction between positive and negative ions.

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

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Both Assertion and Reason are true and Reason is not the correct explanation of Assertion

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Assertion is correct and Reason is incorrect

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Assertion is incorrect and Reason is correct

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Both Assertion and Reason are incorrect

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Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation of Assertion
Most ionic solids have high melting points (approx $1500 K$ ) because ionic solids are made by electrostatic attraction between positive and negative ions. Due to strong intermolecular forces of attraction, the constituent particles are tightly held. This results in a high melting point.
Examples of ionic solids include $N a C l, M g O, B a O, L i F$ , etc.
Thus, both assertion and reason are true and reason is the correct explanation of assertion.

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Assertion: Most ionic solids have high melting points.Reason: Ionic solids are made by electrostatic attraction between positive and negative ions.

Assertion: Most ionic solids have high melting points.
Reason: Ionic solids are made by electrostatic attraction between positive and negative ions.