A) \[{{H}_{3}}P{{O}_{3}}\]
B) \[{{H}_{3}}P{{O}_{2}}\]
C) \[{{H}_{2}}S{{O}_{3}}\]
D) \[{{H}_{3}}P{{O}_{4}}\]
Correct Answer: B
Solution :
\[{{H}_{3}}P{{O}_{2}}\] (hypophosphorus acid) is a monobasic acid. It gives only one type of salt e.g.,\[Na{{H}_{2}}P{{O}_{2}}\].
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