Think about it, the overall charge of CaH2 is neutral (meaning a charge of 0). One of the oxidation rules states that H has a charge of -1 if it is apart of a hydride (Ex LiH, CaH2 is also a hydride). Because there are 2 Hs, it's charge would be -2. If you add the charge of calcium which is 2 with the hydrogens charge -2 you would get 0, which is right because the molecule is neutral.
1- Apex
Sulfur's oxidation number is -2.
The Oxidation number of S here is to be calculated using the oxidation number of H (+1). All compounds' oxidation numbers must sum up to zero.
H2S oxidation number: 2(+1) + (x) = 0
x = -2
Sulfur's oxidation number is -2.
then oxidation number is �2
2- Apex
1-
2-
H2SO4 is a compound and as such does not have an oxidation number. The individual atoms in this compound have oxidation number +1 for each hydrogen atom, +6 for sulfur, and -2 for each oxygen atom.
sulfides
It is different compound to compound. Sulfur generally shows +6 and +4.
When considered the compound as a whole, it has the oxidation number of zero. When it is considered as ions the hydrogen ions has +I and sulfate ion -II oxidation numbers. When compared with respect to elements, sulfur has +VI, hydrogen has +I and oxygen has -II as their oxidation numbers.
2-
H2SO4 is a compound and as such does not have an oxidation number. The individual atoms in this compound have oxidation number +1 for each hydrogen atom, +6 for sulfur, and -2 for each oxygen atom.
It is different compound to compound. Sulfur generally shows +6 and +4.
sulfides
When considered the compound as a whole, it has the oxidation number of zero. When it is considered as ions the hydrogen ions has +I and sulfate ion -II oxidation numbers. When compared with respect to elements, sulfur has +VI, hydrogen has +I and oxygen has -II as their oxidation numbers.
There are 3 elements in it. S Shows -2 as the oxidation number.
Yes, it is a compound of hydrogen and sulfur, or sulfur dioxide.
Number for hydrogen is +1.Number for sulphur is +6.Number for oxygen is -2.The oxidation number for the overall ion is -1. Oxidation numbers for hydrogen and oxygen are +1 and -2 respectively. By balancing the charges, the sulfur atom is in +6 state.
In a whole, sulfur dioxide molecule has oxidation number 0. Sulfur has +4 oxidation number as it is bonded with two oxygen atoms through four covalent bonds. Oxygen atoms have oxygen number of -2 each.
This is a ionic compound too. Sulfur shows +6 in sulfate ion.
sulphate ion is a anion. Sulfur shows +6 in this compound.
The oxidation number of an atom in a compound depends on what is attached to it.The following are examples of oxidation numbers (ON #)for sulfur :S8 ON # 0H2S ON # -2SO2 ON # +4SO3 ON # +6H2SO4 ON# +6