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  • Which of the following directly form superoxide on heating with oxygen ?Option: 1 Li, K &RbOption:

Which of the following directly form superoxide on heating with oxygen ?

Option: 1

Li, K &Rb


Option: 2

Rb & Li


Option: 3

Cs & K only


Option: 4

K , Rb , Cs


Answers (1)

best_answer

As we learnt ,

Upon reaction with oxygen, Lithium forms the mono-oxide, Sodium forms the Peroxide and Potassium, Rubidium and Caesium form the Superoxide.

Increasing stability of peroxides and superoxides from Li to Cs is due to stabilization of larger anions and cations through lattice energy

Therefore, option(4) is correct.

Posted by

Shailly goel

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