Question

derive the formulae of potassium oxide​

Answer 1

Answer:

k2o

Explanation:

potassium              oxygen

   k                               o

  valency                 valency

    1                               2

crisscrossing valencies we get k2o

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Answer 2

Answer:

Potassium have valency 1

Oxygen have valency 2

∴Potassium oxide​ = K₂O