Question Detail

CHM 102 P block elements Objective Question
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Question

Regarding the allotropes of Carbon, which of the following statements is false?
Options
A Diamond is sp³ hybridized and a non-conductor of electricity.
B Graphite is sp² hybridized and has a layered structure with delocalized electrons.
C Graphite is brittle and soft, and conducts electricity along its layers.
D Diamond has a lower melting point than graphite due to weaker covalent bonds.
Correct Answer
Correct Answer

Option D is the correct answer.

Detailed Explanation

Page 11 states that diamond 'Has high mpt because both intermolecular and intramolecular bonds are covalent bonds..' and 'It is extremely hard, non-conductor and chemically inert'. Diamond forms a giant molecular structure with strong covalent bonds throughout, resulting in a very high melting point. Graphite also has a high melting point, but the statement implies diamond's would be lower, which is incorrect.

Hint

Consider the bonding and structure of diamond and graphite, and their implications for physical properties like melting point.

Question Info

Course: CHM 102
Topic: P block elements
Type: Objective
Difficulty: Not specified
Question 1927 of 1999
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