Question

What is chemical formula of potassium hydroxide by criss cross method?

Answer 1

The chemical formula is KOH

Answer 2

Check the valency of (K) and (OH)

Element K OH

Valency 1+ 1-

Now cross the valency so that:

Element K OH

Valency 1- 1+

(1- and 1+ cancel themselves and becomes zero)

So the formula is : KOH