JEE PYQ: P Block Elements Question 70
Question 70 - 2019 (10 Jan Shift 2)
The pair that contains two P$-$H bonds in each of the oxoacids is:
(1) $\text{H}_4\text{P}_2\text{O}_5$ and $\text{H}_4\text{P}_2\text{O}_6$
(2) $\text{H}_3\text{PO}_2$ and $\text{H}_4\text{P}_2\text{O}_5$
(3) $\text{H}_3\text{PO}_3$ and $\text{H}_3\text{PO}_2$
(4) $\text{H}_4\text{P}_2\text{O}_5$ and $\text{H}_3\text{PO}_3$
Show Answer
Answer: (2)
Solution
$\text{H}_3\text{PO}_2$ has 2 P-H bonds. $\text{H}_4\text{P}_2\text{O}_5$ also has 2 P-H bonds. $\text{H}_3\text{PO}_3$ has 1 P-H bond. $\text{H}_4\text{P}_2\text{O}_6$ has no P-H bond.
BETA
