Which of the following oxyacids does not exist?
(a) H3SbO3
(b) HBiO3
(c) H3AsO4
(d) H3BiO4
The correct option is (d) H3BiO4.
Explanation:
Arsenic forms two oxyacids H3AsO3 and H3AsO4. Antimony forms only one oxyacid H3SbO3 and bismuth forms only one oxyacid HBiO3. Therefore H3BiO4 does not exist.
