Select the correct statements about silicates.

CHEMISTRY · Multi correct

Problem

Select the correct statements about silicates. (1) A cyclic silicate having three Si atoms contains six Si−O−Si\text{Si}-\text{O}-\text{Si} linkages. (2) 2122\frac{1}{2} oxygen atoms per tetrahedral unit are shared in a double-chain silicate. (3) (Si2O5)n2n−(\text{Si}_2\text{O}_5)_n^{2n-} is the formula of a double-chain silicate. (4) SiO44−\text{SiO}_4^{4-} units polymerise to form silicates because the Si atom has little tendency to form π\pi bonds with oxygen.

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