Question

chemical formula of pottasium oxide with Criss cross method​

Answer 1

Answer:

K2O

Explanation:

potassium valency = 1 (loose electron)

oxygen valency = 2(gain electron)

So

K2O

Answer 2

The formula of potassium oxide is K₂O.

• In the criss-cross method, the valency of O that is -2 is multiplied with K, and the valency of K is multiplied with the O to form K₂O.
• Potassium oxide is an ionic compound.
• It is a metal oxide.
• It is used in fertilizers.
•  ⇒    K  O

        ⇒   +1  -2

        ⇒     K₂O

Hence, the formula of potassium oxide is K₂O.