hapter 12 ercise 12.14 Reset Help Fullerenes nanotubes covalents bonds fullerene

Question

hapter 12 ercise 12.14 Reset Help Fullerenes nanotubes covalents bonds fullerenes Diamonds hydrogen bonds dispersion forces Nanotubes Nanotubes are long carbon structures, which consist of sheets of interconnected Cs rings that assume the shape of a cylinder (like a roll of chicken wire) In graphite .carbon atoms are arranged in sheets. Within each sheet, the atoms are covalenty bonded to one another by a network of sigma and pi bonds. Neighboring sheets are held together by dispersion forces In diamond each carbon atom forms four covalents bonds to four other carbon atoms in a tetrahedral geometry Fullerenes occur as soccer-ball-shaped clusters of 60 carbon atoms (Cen) and are black solids Graphites diamond onic bonds graphite similar to graphite-the individual clusters are held to one another by covalents bonds

Explanation / Answer

Incorrect statement:

Fullerenes occur as soccer -ball-shaped clusters of 60 carbon atoms (C60) and are black solids similar to graphite-the individual clusters are held to one another by dispersion forces.

explanation:

Fullerenes are closed but hollow carbon cages comprised of graphene sheet like structures made up of pentagonal and hexagonal rings (as in graphite).Individual carbons in a ring are connected by a network of single and double bonds ,however ,C60 clusters are held by weak forces only.

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