`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. FFFF
B. TFTF
C. TTTT
D. FTFT

Answer

C

Explanation

`S_1 and S_2` are correct statements.
`S_3:2XeF_2(s)+H_2O(l)to2Xe(g)+4HF(aq)+O_2(g)`
`{:(6XeF_4 + 12 H_2O to 4Xe+XeO_3 + 24HF+3O_2),(XeF_6+3H_2OtoXeO_3+6HF):}}"Complete hydrolysis"`
`S_4:XeF_2+PF_5 to [XeF]^(+) [PF_6]^(-)`
`XeF_4 +SbF_5 to [XeF_3]^(+)[SbF_6]^(-)`
`XeF_6+MFtoM^(+)[XeF_7]^(-)`
M=Na, K, Rb, Cs