What forms does carbon take in the elemental state on Earth?As copper and zincAs aluminum and ironAs diamonds and graphiteAs platinum and palladium
Question
What forms does carbon take in the elemental state on Earth?
- As copper and zinc
- As aluminum and iron
- As diamonds and graphite
- As platinum and palladium
Solution
When considering the elemental state of carbon on Earth, it primarily exists in two distinct forms: diamond and graphite. These two allotropes of carbon have different structural arrangements, leading to their unique physical properties.
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Diamond: In this form, carbon atoms are arranged in a tetrahedral lattice structure, where each carbon atom is covalently bonded to four other carbon atoms. This structure imparts exceptional hardness and optical properties, making diamonds valuable for both industrial applications and jewelry.
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Graphite: In graphite, carbon atoms are arranged in planar sheets where each atom is bonded to three other carbon atoms in a hexagonal pattern. These layers can easily slide over each other, which gives graphite its lubricating properties and allows it to be used in applications such as pencils and dry lubricants.
Given the options presented in your question, "As diamonds and graphite" is the correct answer since they represent the two principal forms of carbon in its elemental state on Earth.
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