The silicates which contain Si_2O_7^{6-} unit | vedclass

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(C) Silicates are classified based on the number of oxygen atoms shared between $SiO_4^{4-}$ tetrahedral units.$1$. Ortho silicates contain discrete $

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Pyro silicates

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(C) Silicates are classified based on the number of oxygen atoms shared between $SiO_4^{4-}$ tetrahedral units.$1$. Ortho silicates contain discrete $SiO_4^{4-}$ units.$2$. Pyro silicates (also known as sorosilicates) are formed by sharing one oxygen atom between two $SiO_4^{4-}$ units,resulting in the $Si_2O_7^{6-}$ anion.$3$. Cyclic silicates contain units where two oxygen atoms per tetrahedron are shared to form a ring structure.$4$. Chain silicates involve sharing two oxygen atoms per tetrahedron to form a long chain.Therefore,the silicates containing $Si_2O_7^{6-}$ units are called pyro silicates.

The silicates which contain $Si_2O_7^{6-}$ units are called

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