What is the similarity between diamond and graphite. 

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  1. Both are soft
  2. Both are conductors
  3. Both are insulators
  4. Both are covalent or network solids

Answer (Detailed Solution Below)

Option 4 : Both are covalent or network solids
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CONCEPT:

Diamond and Graphite

  • Diamond and graphite are both allotropes of carbon, meaning they are different structural forms of the same element, carbon.
  • Both diamond and graphite consist of carbon atoms, but they have different arrangements and bonding structures.
  • Diamond has a tetrahedral structure where each carbon atom is bonded to four other carbon atoms in a three-dimensional network.
  • Graphite has a planar hexagonal structure where each carbon atom is bonded to three other carbon atoms, forming layers that can slide over each other.

EXPLANATION:

  • The similarity between diamond and graphite:
    • Both diamond and graphite are covalent or network solids.
    • This means that they are composed of a continuous network of covalent bonds extending throughout the material.
  • While their physical properties differ significantly (diamond is hard and an insulator, whereas graphite is soft and a conductor), the fundamental similarity lies in their bonding and structure as covalent network solids.

Therefore, the correct option is 4) Both are covalent or network solids.

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