Q129 / 200 · MHT CET - Medical 2026 (26 April Shift 1) · Chemistry
Which of the following is existing oxoacid of fluorine?
- Correct answerA$\text{HFO}$
- B$\text{HFO}_2$
- C$\text{HFO}_3$
- D$\text{HFO}_4$
Solution
Fluorine forms only one oxoacid, which is hypofluorous acid ($\text{HOF}$ or $\text{HFO}$).
This is because fluorine is the most electronegative element and cannot exhibit positive oxidation states, which are required to form higher oxoacids like $\text{HFO}_2$, $\text{HFO}_3$, or $\text{HFO}_4$.
In $\text{HOF}$, the oxidation state of fluorine is $-1$, hydrogen is $+1$, and oxygen is $0$.
Answer: $\text{HFO}$
This is because fluorine is the most electronegative element and cannot exhibit positive oxidation states, which are required to form higher oxoacids like $\text{HFO}_2$, $\text{HFO}_3$, or $\text{HFO}_4$.
In $\text{HOF}$, the oxidation state of fluorine is $-1$, hydrogen is $+1$, and oxygen is $0$.
Answer: $\text{HFO}$
Hence, the correct answer is option: 'A'.