ClO4- is the perchlorate ion.
perchloric acid
Barium exists as +2 ion. The formula of chlorate ion is (ClO4)-. Therefore the corresponding compound is Ba[(ClO4).(H2O)6]2
By charge, I assume you mean oxidation number. Oxygen's oxidation number is a very dependable -2, with only a few strange exceptions. A better question would be "What is chlorine's oxidation number in ClO4-?" The answer would be +7.
Discretion, Excretion, Accretion, Secretion, Bet ion, Get ion, Jet ion, Let ion, Met ion, Net ion, Pet ion, Set ion, Skeet ion, Vet ion, Wet ion.
The ion charge of an NH4 ion is 1.
Nitride Ion.
A cation is a positively charged ion. Barium ion is Ba^2+, chloride ion is Cl^-, nitrate ion is NO3^-, and chromate ion is CrO4^2-.
The correct name for the cesium ion is "cesium ion" or "Cs+ ion".
It is H2PO4- ion which is called Di-Hydrogen-Phosphate ion.
barium ion is a cation. rest listed are anions.
Na is positive ion,Cl is negative ion
The potassium ion is K+ and the sulfate ion is SO42-