The compound that attacks pyrex glass is

Options

A. `XeF_2`
B. `XeF_4`
C. `XeF_6`
D. None of these

Explanation

(c ) `Xe F_6` attacks pyrex glass. The reaction steps are as follows:
`2 Xe F_6 + SiO_(2) to 2 Xe OF_(4) + SiF_(4)`
`2Xe OF_(4) + SiO_(2) to 2Xe O_(2) F_(2) + Si F_(4)`
`2 Xe O_(2) F_(2) + SiO_(2) to 2 Xe O_(3) + Si F_(4)`