The formula for a sulphate ion is SO42- so the valency of a sulphate ion is -2.
The valency of sulfur is 2.
Na2co3
i think its 2
magnesium has a valency of 2
The formula for a sulphate ion is SO42- so the valency of a sulphate ion is -2.
The valency of sulfur is 2.
Na2co3
The valency of hydrogen in one.
The sulfate anion has a valency of 2-, i.e. it is SO4^2-
i think its 2
-2
magnesium has a valency of 2
The valency of hydrogen is +1 because it has a tendency to lose an electron while combining with an Elelment. This gives it a positive valency.
Copper(II) sulphate is written like this because here II denotes the oxidation state of copper or in simple language, it denotes its valency.Copper sometimes shows +1 valency and sometimes +2.So to specify, its valency in a compound, the valency is written in brackets.
A hydrogen carbonate ion has the formula HCO3- so the valency of a hydrogen carbonate ion is -1.
the smallest element is hydrogen of which its valency is one.