`S_(1):` Argon is used in arc welding of metals or alloys to provide an inert atomosphere.
`S_(2):" XeF_(2),XeF_(4)` and `XeF_(6)` are colourless crystalline solids and sublime readily at `298K`.
`S_(3):XeF_(2),XeF_(4)` and `XeF_(6)` are readily hydrolysed.
`S_(4): ` Xenon fluorides react with flourine ion acceptor to form cationic species and fluoride ion donors to form fluoro anions.

Options

A. `F F F F `
B. `T F T F`
C. `T T T T`
D. `F T F T `

Answer

C

Explanation

`S_(1)` and `S_(2)` are correct statements.
`S_(3):2XeF_(2)(s)+H_(2)O(l)rarr2Xe(g)+4HF(aq)+O_(2)(g)`
`{:(6XeF_(4)+12H_(2)O,rarr,4Xe+XeO_(3),+,24HF+3O_(2)),(XeF_(5)+3H_(2)O,rarr,XeO_(3)+6HF,,):}}"Complete hydrolysis"`
`S_(4): XeF_(2)+PF_(5)rarr[XeF]^(+)[PF_(6)]^(-)`
`XeF_(4)+SbF_(5)rarr[XeF_(3)]^(+)[SbF_(6)]^(-)`
`XeF_(6)+MFrarr M^(+)[XeF_(7)]^(-)`
`M=Na, K, Rb" or "Cs`