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State how the melting point and density of iron compare to tho
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State how the melting point and density of iron compare to those of calcium.

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The melting point and density of iron are higher than those of calcium.

Iron has a melting point of 1538°C and a density of 7.87 g/cm³, while calcium has a melting point of 842°C and a density of 1.55 g/cm³. This is because iron has a much stronger metallic bonding due to the presence of unpaired electrons in its partially filled d-orbitals, which makes it more difficult to break the intermolecular forces and overcome the strong metallic bonding.

Calcium, on the other hand, has a weaker metallic bonding because it has only two valence electrons and thus can form only two covalent bonds, making it easier to break the intermolecular forces between atoms.
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Question Text
State how the melting point and density of iron compare to those of calcium.
TopicTransition elements
SubjectChemistry
ClassGrade 12
Answer TypeText solution:1
Upvotes62