Assertion :Ionic crystals have the highest melting point. Reason: Covalent bonds are stronger than ionic bonds.
A
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
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B
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
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C
Assertion is correct but Reason is incorrect
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D
Both Assertion and Reason are incorrect
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Solution
The correct option is C Assertion is correct but Reason is incorrect
Assertion is correct since higher melting points of covalent crystals are due to network structures.
Many ionic crystals also have high melting points. This is due to the very strong attractions between the ions—in ionic compounds, the attractions between full charges are (much) larger than those between the partial charges in polar molecular compounds.
Correct Reason for it : Covalent bonds are weaker than ionic bonds.