# Chemistry

posted by .

Oxidation State numbers

For Fe3+ i got 3+ b/c Oxidation state monatomic ion = ionic charge and i got that answer wrong. i am receiving wrong answers for these below aswell.
I used these rules for the following

-Alkali metals are always +1; alkaline earths are always +2.

-Sum of oxidation states is zero for neutral compounds, and equal to the overall charge for polyatomic ionic species

CuCl2= Oxidation states of Cu? Cl2?
CO_2 Cu? O?
MnO_4^2- Mn? O
HSO_4^- H? So

• Chemistry -

+3 is correct for Fe^+3.
Cu in CuCl2 is +2.
Cl in CuCl2 is -1 each.
C in CO2 is +4; O is -2 each.
Mn in MnO4^- is +7; O is -2 each
H in HSO4^- is +1; SO4^-2 is -2; S is +6 and O is -2 each.

## Similar Questions

1. ### CHEM

What is the exact method/formula used to calculate oxidation state #'s?
2. ### Chemistry

Ok I think I figured this out but im not sure if its right please help. Thanks(= Determine the oxidation number for nitrogen in each of the following a)NH3 = -3 b)NO2-1 = 2 c)N2= 2 d)NO2Cl= 2 e)N2H4= 2 The first one is right. All must …
3. ### Chemistry

Electron Transfer Theory Write an label the oxidation and reduction half-reaction equations. a) Ni(s) + Cu(NO3)2(aq) -> Cu(s)+ Ni(No3)2(aq) oxidation - Ni(s) -> Ni2+(aq) + 2e- reduction - Cu2+(aq) + 2e- -> Cu(s) b) Pb(s) + …
4. ### Chemistry

Electron Transfer Theory Write an label the oxidation and reduction half-reaction equations. a) Ni(s) + Cu(NO3)2(aq) -> Cu(s)+ Ni(No3)2(aq) oxidation - Ni(s) -> Ni2+(aq) + 2e- reduction - Cu2+(aq) + 2e- -> Cu(s) b) Pb(s) + …
5. ### Honors Chemistry

I have to fill in the blanks of these questions with the elements H (hydrogen), Co (cobalt), Ga (gallium), and O (oxygen), but different sources are telling me different things: 7. Its most common oxidation state is -2 8. A metal with …
6. ### Chemistry

Trying to name this compound and figure out its oxidation state [ CoBr2(NH3)3(H2O) ]+ I came up with triammineaquadibromocobalt(II) ion with a +3 oxidation state...but not sure if this is right... similarily for [Fe(ox)(Cl)4]3- I came …
7. ### Chemistry - oxidation numbers

How do you use a Lewis Structure to find the oxidation state of an element. I have this question using the oxidation rule i got +2, however how do i use it with Lewis structure. QUESTION Use the Lewis structure of a thiosulfate ion …
8. ### chemistry

Assign an oxidation state to each atom in each of the following compounds. 1) Fe(CN)3 i know Fe= +3 but how do i find the oxidation state for C and N?
9. ### Chemistry

When looking at the Periodic Table, the oxidation state of hydrogen is +1; however my teacher told me that the net charge of hydrogen is 0. I do not understand why this is?
10. ### Chemistry URGENT

I need help understanding oxidation I have a problem that states: The proper assignment of oxidation numbers to the elements in the compound LiAsO3 would be: I think the answer is +1 for Li, +3 for As and -2 for O. I think I am confusing …

More Similar Questions