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The melting point of lithium metal is 454 K, and that of sodium is 371 K. Which of the following statements can explain this difference in their melting points?

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Metallic bonding in lithium is stronger than metallic bonding in sodium.

The delocalized electrons are more strongly attracted to the metal cation of lithium.

The lithium cations have a greater charge density than sodium cation.

$L i^{+}$ cations are smaller than $N a^{+}$ cations.

answer is A, B, C, D.

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All statements explains the given difference.

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