# What is the empirical formula of sheet silicates ?

$\begin {array} {1 1} (a)\;(Si_2O_5)_n^{2n} & \quad (b)\;(SiO_3)_n^{2n-} \\ (c)\;(SiO_3)^{n-}_{n} & \quad (d)\;(Si_2O_7)_{n}^{3n-} \end {array}$

$(a)\;(Si_2O_5)_n^{2n}$
answered Nov 7, 2013 by