MolSynapsequestion bank

MolSynapse / Question bank / p-Block Elements: Groups 15 and 16 / Structures of oxyacids and oxides

JEE Main levelSingle correct optionDifficulty 2 of 3pn206

Hypophosphorous acid, $H X_{3} PO X_{2}$ , contains how many P-H bonds and how many P-OH groups respectively?

A0 and 3
B2 and 1
C1 and 2
D3 and 0

Answer: B

H X_{3} PO X_{2}

is

HP (H) (= O) OH

: two P-H bonds, one P-OH and one P=O. Only the P-OH hydrogen is acidic, so it is monobasic.

Practice p-Block Elements: Groups 15 and 16 More on Structures of oxyacids and oxides

Previous questionNext question

More questions on Structures of oxyacids and oxides

The basicity of phosphorous acid, H3PO3, is NEET level
The hybridisation of sulphur in SO3 (gas phase monomer) is NEET level
The number of S=O bonds in a molecule of sulphuric acid, H2SO4, is NEET level
In peroxodisulphuric acid, H2S2O8, the oxidation state of sulphur and the number of S=O bonds are respectively JEE Main level
The total basicity of H3PO2, H3PO3 and pyrophosphoric acid H4P2O7 (sum of the three values) is JEE Main level
Which of the following species has a pyramidal shape? JEE Main level