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Which of the following statement is incorrect?

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Mg and Ca both impart characteristic color to the flame

The metallic radius of Na is greater than that of Mg

Metallic bond of Mg is stronger than the metallic bond in Na

Melting point of Mg is greater than melting point of Ca

answer is A.

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Detailed Solution

Mg does not impart colour to the flame but calcium gives brick red colour.

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