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CaF(2)+H(2)SO(4) rarr A+B SiO(2)+under...

`CaF_(2)+H_(2)SO_(4) rarr A+B`
`SiO_(2)+underset("(excess)")(B) rarr C`
The component `C` contains

A

`[SiF_(6)]^(4-)`

B

`[SiF_(6)]^(2-)`

C

`[SiF_(4)]^(6-)`

D

`[SiF_(4)]^(4-)`

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