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NEET CHEMISTRYP Block ElementsEasy

Question

Choose the correct statement:

A

Both diamond and graphite are used as dry lubricants.

B

Diamond and graphite have a two-dimensional network.

C

Diamond is covalent and graphite is ionic.

D

Diamond is sp3sp^3 hybridised and graphite is sp2sp^2 hybridized.

Step-by-Step Solution

Let us evaluate each statement:

  1. Only graphite is soft and slippery, making it useful as a dry lubricant for machines running at high temperatures. Diamond is extremely hard and is used as an abrasive.
  2. Diamond has a rigid three-dimensional tetrahedral network, whereas graphite has a two-dimensional planar layered structure.
  3. Both diamond and graphite are giant covalent network solids formed entirely of carbon atoms; neither of them is ionic.
  4. In diamond, each carbon atom undergoes sp3sp^3 hybridisation and is covalently bonded to four other carbon atoms. In graphite, each carbon atom undergoes sp2sp^2 hybridisation and is bonded to three other carbon atoms in the same plane. Therefore, this statement is the only correct one.

Exam Context & Concepts Covered

This question aligns with the NEET CHEMISTRY syllabus, specifically targeting concepts from P Block Elements. Mastering this topic is crucial for scoring well in the upcoming medical entrance examinations. Solving conceptually related problems will help you understand the nuances of these concepts and improve your problem-solving speed.

CHEMISTRYP Block Elementschoosecorrectstatement

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Identify the incorrect statement:

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