HClO4
(the four is a subscript)
oxidation number of any element in its molecular state equals zero but it differs when in a compound
The Perchlorate salts and Dichlorine heptoxide
2-
-2
This oxide is a acidic gas. Chlorine shows the +7 number.
oxidation number of any element in its molecular state equals zero but it differs when in a compound
The Perchlorate salts and Dichlorine heptoxide
Usually, oxygen has an oxidation of -2 (that is unless in a compound with peroxides or halogens).
2-
-2
This oxide is a acidic gas. Chlorine shows the +7 number.
as oxidation number of K is 1 and the molecule is neutral 1+ Cl=0 Cl= -1 Therefore, the oxidation number of Cl is -1
It contains two elements. Na shows +1. chlorine shows -1 oxidation number.
Hydrogen it depends on the other element if it is part of a compound
Actually there are a few KBrO3 or NaBrO3 etc - in the bromate ion, bromine is in oxidation state +7
0 in elemental form +1 in its compounds
A compound of aluminum and chlorine has an ionic bond.