The magnetic behaviour of $$\mathrm{Li_2O,Na_2O_2}$$ and $$\mathrm{KO_2}$$, respectively, are :

Compound that will give positive Lassaigne's test for both nitrogen and halogen is :

Identify the correct order for the given property for following compounds.

Choose the correct answer from the option given below :

The bond dissociation energy is highest for