Group 14(carbon family) elements have the following properties:They are all network solids with octahedral network.Only SiO_2 is a network solid with tetrahedral coordination and is a giant molecules.SnO_2 and PbO_2 are amphoteric oxides.All oxides are ac (2024)

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Standard XII

Chemistry

Silica

Question

Only SiO2 is a network solid with tetrahedral coordination and is a giant molecules.

All oxides are acidic.

SnO2 and PbO2 are amphoteric oxides.

Silica has a three-dimensional network structure. In silica, silicon is sp3-hybridized and is thus linked to four oxygen atoms and each oxygen atom is linked to two silicon atoms forming a three-dimensional giant molecule as shown in figure.

All the elements of this group form oxides of the type MO2 out of which CO2 and SiO2 are acidic while GeO2, SnO2 and PbO2 are amphoteric.

Group 14(carbon family) elements have the following properties:They are all network solids with octahedral network.Only SiO_2 is a network solid with tetrahedral coordination and is a giant molecules.SnO_2 and PbO_2 are amphoteric oxides.All oxides are acidic. (1)

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