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Pyroxenes are class of silicate minerals...

Pyroxenes are class of silicate minerals, which exhibit a polymeric chain structure, as shown below

Its simplest repeating unit is

A

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

B

`[SiO_(3)]^(2-)`

C

`[Si_(2)O_(7)]^(6-)`

D

`[Si_(4)O_(11)]^(6-)`

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The correct Answer is:
B
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