Because there is only one stable ionic compound made up of potassium and chlorine, and that is KCl. So calling is "mono chloride" or similar would be redundant assuming you understand basic chemistry (i.e. knowing oxidation numbers of K is +1 and Cl is -1). When compounds can exist in multiple forms in nature like CO and CO2 you will preferably indicate it through the nomenclature, calling one a monoxide and the other a dioxide.
In potassium chloride, the metal element is potassium (K) and the nonmetal element is chlorine (Cl) the oxidation numbers of K are +1 and Cl is -1.
So we can say that KCl is an ionic compound.
When writing the formula, the positive atom or ion comes first followed by the name of the negative ion.
Its chemical formula is KCl, which consists of one potassium (K) atom and one chlorine (Cl) atom.
An ionic compound is made of a metal element and a nonmetal element.
There is only one stable ionic compound made up of potassium and chlorine, and that is KCl.
In potassium chloride, the metal element is potassium (K) and the nonmetal element is chlorine (Cl) the oxidation numbers of K are +1 and Cl is -1.
So we can say that KCl is an ionic compound.
Learn more about ionic compounds here:
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