The main oxides formed on combustion of Li, Na and K in air are...

The main oxides formed on combustion of Li, Na and K in air are respectively

Options

A $L{i}_{2}O, N{a}_{2}{O}_{2}$ and $K{O}_{2}$
B $L{i}_{2}O, N{a}_{2}O$ and $K{O}_{2}$
C $Li{O}_{2}, N{a}_{2}{O}_{2}$ and ${K}_{2}O$
D $L{i}_{2}{O}_{2}, N{a}_{2}{O}_{2}$ and $K{O}_{2}$

Correct answer

A. $L{i}_{2}O, N{a}_{2}{O}_{2}$ and $K{O}_{2}$

Step-by-step solution

The stability of the oxide of alkali metals depends upon the comparability of size of cation and anion.

Therefore the main oxide of alkali metals formed on excess of air are as follows

The main oxides formed on combustion of Li, Na and K in air are respectively

Practice s Block Elements on Quantrex Academy →

More from s Block Elements

First and second ionization enthalpies of lithium are 520 kJ mol ^ -1 and 7297 kJ mol ^… JEE Main 2026 The correct set that contains all kinds (basic, acidic, amphoteric and neutral) of oxides… JEE Main 2026 Given below are two statements: One is labelled as Assertion A and the other is labelled… JEE Main 2023 Be ( OH ) _ 2 reacts with Sr ( OH ) _ 2 to yield an ionic salt. Choose the incorrect… JEE Main 2023 In the given reaction cycle X, Y and Z respectively are JEE Main 2023 The density of alkali metals is in the order JEE Main 2023 Alkali metal from the following with least melting point is JEE Main 2023 Mg ( NO _ 3 ) _ 2 . XH _ 2 O and Ba ( NO _ 3 ) _ 2 . YH _ 2 O , represent formula of the… JEE Main 2023 Full s Block Elements list All NTA Abhyas JEE Main PYQs