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The compound formed between potassium and the chlorate ion is potassium chlorate (KClO3). Potassium has a +1 charge, while the chlorate ion (ClO3-) has a -1 charge. So, one potassium ion combines with one chlorate ion to form a neutral compound.
The charge on a chlorate ion is -1. This means that the oxidation state of the chlorine atom in the ion is +7. Cl + O3 = -1 (overall charge) ? + (3 x -2) = -1 Therefore ?= +7 You must remember to put in the sign, even if it is positive.-1 valency
Chloride: Cl- Chlorite: ClO2- Chlorate: ClO3-
The oxidation state of chlorine in the chlorate ion ClO3 is +5. This is because oxygen is more electronegative than chlorine and its oxidation state is typically -2 in compounds. Since there are three oxygen atoms with a total charge of -6 in the chlorate ion, the oxidation state of chlorine must be +5 to balance out the charge.
An atom is a neutral particle with the same number of protons as electrons. Ions are particles that have either more or less electrons. Ions can be positively charged (cations) or negatively charged. Ions will lose or gain electrons in order to have eight outer shell electrons. A chlorine atom has 17 electrons and 7 valence electrons (outer shell). It "wants" to have eight valence electrons, so it will gain one. Therefore, the typical chlorine atom will have one electron more.