Q21 / 150 · MHT CET 2011 · Chemistry

The common basic structural unit in silicates and silica is

  • A
    $\mathrm{Si}_{2} \mathrm{O}_{6}^{4-}$
  • B
    $\mathrm{SiO}_{3}^{2-}$
  • Correct answer
    C
    $\mathrm{SiO}_{4}^{4-}$
  • D
    $\mathrm{Si}_{2} \mathrm{O}_{7}^{6-}$

Solution

Silica $\left(\mathrm{SiO}_{2}\right)$ and silicates contain a common structural unit $\left(\mathrm{SiO}_{4}\right)^{4-}$ in which each Si is surrounded tetrahedrally by four oxygen atoms.

Hence, the correct answer is option: 'C'.

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