Question

Which of the following compounds has phosphorus in $+1$ oxidation state ?

• A. $H_{3}P{O}_3$
• B. $H_{3}P{O}_4$
• C. $H_{3}P{O}_2$
• D. $H_4{P}_2{O}_7$

Answer 1

Answer: (C)

$H_{3}P{O}_2$

Phosphorous on $H_{3}P{O}_2$ exhibit $+1$ oxidation state.

$3(+1)+x+3(-2)=0$

$3+x-4=0$

$X=4-3$

$X=1$.

Hence option C is correct.