Question

Which of the following compounds has phosphorus atom 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)

$H_{3}P{O}_2$

For the oxidation state of $P$ :
$(3\times 1)+x+(2\times (-2\left)\right)=0$
$\therefore 3+x-4=0$
$\therefore x-1=0$
$\therefore x=1.$