Question

Which of the following will form acidic oxide and why? K , P , Na, Ca

Answer 1

A basic oxide is an oxide that shows basic properties in opposition to acidic oxides and that either

reacts with water to form a base; orreacts with an acid to form a salt and water.

Examples include:

Sodium oxide, which reacts with water to produce sodium hydroxideMagnesium oxide, which reacts with hydrochloric acid to form magnesium chlorideCopper(II) oxide, which reacts with nitric acid to form copper nitrate

Basic oxides are oxides mostly of metals, especially alkali and alkaline earth metals.

Answer 2

Only non-metals can form acidic oxide and since the only non-metal present in the given situation is Phosphorous, Phosphorous will form an acidic oxide.