On the surface, it's potassium oxide, or one of the oxides of postassium. But there's a catch. Potassium has only one oxidation state, and it's +1 (strongly basic). It will combine with oxygen only in the ratio of two to one. That's two potassium atoms and one oxygen atom, which gives us K2O for a compound. There isn't any KO3 around anywhere. A link can be found below. Wikipedia has more information.
It's either potassium phosphate or tripotassium phosphate
DiPotassium oxide
The chemical formula K3PO4 is for tripotassium phosphate.
In this case, the empirical formula and the molecular formula are the same and it is K3PO4.
K3PO3 is potassium phosphite.This is not the same as K3PO4 postasium phosphate.
Formula: K3PO4
Potassium is K (with a 1+ valence) and the phosphate anion is PO4 (with a 3- valence). Thus, it takes 3 K's for each PO4. The formula for potassium phosphate is K3PO4.
The chemical formula K3PO4 is for tripotassium phosphate.
In this case, the empirical formula and the molecular formula are the same and it is K3PO4.
This compound doesn't exist; probably you think to a potassium phosphate as K3PO4 or another.
K3PO3 is potassium phosphite.This is not the same as K3PO4 postasium phosphate.
Formula: K3PO4
Potassium is K (with a 1+ valence) and the phosphate anion is PO4 (with a 3- valence). Thus, it takes 3 K's for each PO4. The formula for potassium phosphate is K3PO4.
K3PO4
K3po4
Potassium Phosphate K3PO4 3 K ions and 1 PO4 ion
If "kallium" in the questions was intended to be "kalium", the Latin name for potassium, the formula of the most common type is is K3PO4, which is more exactly called potassium orthophosphate KPO2 is the formula for another compound that can be called "kalium" phosphate, more exactly metaphosphate. Either formula can also have water of hydration.
Potassium phosphate K3PO4
CaCl2, K3PO4