Hello there! I was wondering if you could check my answers for me? I was having trouble and I finally understand.

1. Indicate the oxidation number of carbon and sulfur in the following compounds.
A) CO= +2
C) Na2CO3= +4
E) CH4= -4
G) SO2= +4
I) Na2SO4= +6
K) Na2S303= +2
M) SCl2= +2
O) SOCl2= +4

2.) Indicate the oxidation number of phosphorous, iodine, nitrogen, tellurium, and silicon.

b) PO3^3-= +3
d) P3O10^5-= +5
f) IO2^-= +3
h) NH4^+= -3
j) NO2^-= +3
l) NO2^+= +5
N) TeO4^2-= +6

3.) Indicate the oxidation number of the metallic elements in the following compounds.

a) Fe2O3= +3
c) CoS= +2
e) K3CoCl6= +3
G) CrO3= +6
I) K2Cr2O7= +6
K) K2MnO4= +6
M) MnO2= +4
O) Pb04= +8

Thank you so much! I have a quiz tomorrow and I want to make sure I am practicing everything correctly.

yes i belive so

Sure! I'd be happy to help you check your answers.

1. Indicate the oxidation number of carbon and sulfur in the following compounds:
A) CO = +2 (Correct)
C) Na2CO3 = +4 (Correct)
E) CH4 = -4 (Correct)
G) SO2 = +4 (Correct)
I) Na2SO4 = +6 (Correct)
K) Na2S2O3 = +2 (Correct)
M) SCl2 = +2 (Correct)
O) SOCl2 = +4 (Correct)

2. Indicate the oxidation number of phosphorus, iodine, nitrogen, tellurium, and silicon:
b) PO3^3- = +3 (Correct)
d) P3O10^5- = +5 (Correct)
f) IO2^- = +3 (Correct)
h) NH4^+ = -3 (Incorrect, it should be +1)
j) NO2^- = +3 (Correct)
l) NO2^+ = +5 (Correct)
N) TeO4^2- = +6 (Correct)

3. Indicate the oxidation number of the metallic elements in the following compounds:
a) Fe2O3 = +3 (Correct)
c) CoS = +2 (Correct)
e) K3CoCl6 = +3 (Correct)
G) CrO3 = +6 (Correct)
I) K2Cr2O7 = +6 (Correct)
K) K2MnO4 = +6 (Correct)
M) MnO2 = +4 (Correct)
O) PbO4 = +8 (Correct)

Overall, your answers are mostly correct. Just a small mistake in question 2 (h) where the oxidation number of NH4^+ is +1 instead of -3. Good luck on your quiz!

Sure! I can help you check your answers. Let's go through each question one by one:

1. Indicate the oxidation number of carbon and sulfur in the following compounds:
A) For CO, the oxidation number of carbon is +2.
C) For Na2CO3, the oxidation number of carbon is +4.
E) For CH4, the oxidation number of carbon is -4.
G) For SO2, the oxidation number of sulfur is +4.
I) For Na2SO4, the oxidation number of sulfur is +6.
K) For Na2S2O3, the oxidation number of sulfur is +2.
M) For SCl2, the oxidation number of sulfur is +2.
O) For SOCl2, the oxidation number of sulfur is +4.

2. Indicate the oxidation number of phosphorus, iodine, nitrogen, tellurium, and silicon in the following compounds:
b) For PO3^3-, the oxidation number of phosphorus is +3.
d) For P3O10^5-, the oxidation number of phosphorus is +5.
f) For IO2^-, the oxidation number of iodine is +3.
h) For NH4^+, the oxidation number of nitrogen is -3.
j) For NO2^-, the oxidation number of nitrogen is +3.
l) For NO2^+, the oxidation number of nitrogen is +5.
N) For TeO4^2-, the oxidation number of tellurium is +6.

3. Indicate the oxidation number of the metallic elements in the following compounds:
a) For Fe2O3, the oxidation number of iron is +3.
c) For CoS, the oxidation number of cobalt is +2.
e) For K3CoCl6, the oxidation number of cobalt is +3.
G) For CrO3, the oxidation number of chromium is +6.
I) For K2Cr2O7, the oxidation number of chromium is +6.
K) For K2MnO4, the oxidation number of manganese is +6.
M) For MnO2, the oxidation number of manganese is +4.
O) For PbO4, the oxidation number of lead is +8.

Please note that the oxidation numbers may vary depending on the specific rules used, and there may be different conventions or exceptions. However, the answers given above are based on common oxidation number rules. Let me know if you have any other questions or need further clarification! Good luck with your quiz!