MCQ
Which of the following is incorrect statement ?
- ✓$PbF_4$ is covalent in nature
- B$SiCl_4$ is easily hydrolysed
- C$GeX_4\; (X = F, Cl, Br, I)$ is more stable than $GeX_2$
- D$SnF_4$ is ionic in nature
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$i\,\, HCO_3$ $ii. \,H_3O^+$
$iii.\, HSO_4^-$ $iv.\, HSO_3F$
Which one of the following is the correct sequence of their acid strength?