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Question about Chemical Bonds: Covalent

Chemistry

Originais Teachy

Chemical Bonds: Covalent

Medium

(Originais Teachy 2023) - Question Medium of Chemistry

Diamonds, known for their exceptional beauty and hardness, are used in both jewelry and various industrial applications, such as cutting and drilling hard materials. These remarkable properties of diamonds derive from their molecular structure, in which each carbon atom is bonded to four other carbon atoms through covalent bonds. Considering this information and your knowledge of chemical bonds, explain why the covalent bonding structure of diamond contributes to its hardness and resistance, as well as why other compounds with covalent bonds may not exhibit the same hardness.
a.
The hardness and resistance of diamond are due to its three-dimensional molecular structure, where each carbon atom is bonded to four other carbon atoms through strong covalent bonds. Other compounds with covalent bonds may not exhibit the same hardness because their molecular structures may be different and the covalent bonds may not be as strong or as well distributed as in diamond.
b.
The hardness of diamond is due to the presence of ionic bonds between the carbon atoms, which are stronger than covalent bonds. Other compounds with covalent bonds do not exhibit the same hardness because ionic bonds are stronger.
c.
The hardness of diamond is due to its linear molecular structure, where each carbon atom is bonded to two other carbon atoms through strong covalent bonds. Other compounds with covalent bonds may not exhibit the same hardness because their molecular structures may be more complex.
d.
The hardness and resistance of diamond are due to the presence of hydrogen bonds between the carbon atoms. Other compounds with covalent bonds may not exhibit the same hardness because hydrogen bonds are stronger.
e.
The hardness of diamond is due to the presence of metallic bonds between the carbon atoms, which are stronger than covalent bonds. Other compounds with covalent bonds may not exhibit the same hardness because metallic bonds are stronger.

Answer sheet:

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