Question

Which of the following is true regarding the basic strength?

(a) Potassium oxide is more basic than cesium oxide

(b) Lithium oxide is more basic than sodium oxide

(c) Cesium oxide is more basic than potassium oxide

(d) Sodium oxide is more basic than cesium oxide

The question was asked in homework.

Origin of the question is s-Block Elements topic in division s-Block Elements of Chemistry – Class 11

Answer 1

The correct answer is (c) Cesium oxide is more basic than potassium oxide

For explanation: All the oxides, peroxides and superoxides of alkali metals which are formed when heated with oxygen are basic in nature. The basic strength of oxides increases in the order of lithium oxide, sodium oxide, potassium oxide, and cesium oxide.