EASY
Diploma
IMPORTANT
Earn 100

Deduce which of the following species may form hydrogen bonds with water molecules:

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Important Questions on Chemical Bonding and Structure

EASY
Diploma
IMPORTANT

Compare and contrast the allotropes of carbon (diamond, graphite, graphene, and C60) in terms of structure.

EASY
Diploma
IMPORTANT

Compare and contrast the allotropes of carbon (diamond, graphite, graphene, and C60) in terms of bonding.

EASY
Diploma
IMPORTANT

Compare and contrast the allotropes of carbon (diamond, graphite, graphene, and C60) in terms of intermolecular forces.

MEDIUM
Diploma
IMPORTANT

Compare and contrast the allotropes of carbon (diamond, graphite, graphene, and C60) in terms of melting points.

EASY
Diploma
IMPORTANT

Compare and contrast the allotropes of carbon (diamond, graphite, graphene, and C60) in terms of electrical conductivity.

MEDIUM
Diploma
IMPORTANT

In chemistry, both terminology and models can often lead to certain assumptions. Suggest why the term "macromolecular" is incorrect based on IUPAC recommendations for covalent network solids such as graphite.

MEDIUM
Diploma
IMPORTANT

In chemistry both terminology and models can often lead to certain assumptions. The O-Cl-O bond angle in OCl2 is 110.9°. Discuss whether this bond angle agrees with predictions of bond angles based on the model of VSEPR theory.

MEDIUM
Diploma
IMPORTANT
Suggest why VSEPR theory does not work for the majority of transition metal complexes, such as [FeCl4]2-, but does for a few complexes, such as [MnO4]-.