Question

Определите пожалуйста степени окисления каждого элемента следующих формул:1)CsNO2, 2)Al2S3, 3)Hg(NO3)2, 4)KCl 5)Sr2SiO4, 6)AgSiO3 7)CrCo3 8)Al2(SO4)39)FePO4

Answer 1

1)+1;+3 и -2                  8)+3; +6; -2
2)+3 и -2                       9)+3; +5; -2
3)+2;+5 и -2
4)+1 и -1
5)+2; +4; -2
6)+2; +4; -2 
7)+3 и -1

Answer 2

1) CsNO2: Cs: +1 (Cs is an alkali metal and typically has a +1 oxidation state) N: +3 (Oxygen typically has an oxidation state of -2, and there are two oxygen atoms in NO2. Therefore, the nitrogen atom must have an oxidation state of +3 to balance the charges) O: -2 (Oxygen typically has an oxidation state of -2)

2) Al2S3: Al: +3 (Aluminum typically has an oxidation state of +3) S: -2 (Sulfur typically has an oxidation state of -2)

3) Hg(NO3)2: Hg: +2 (Mercury typically has an oxidation state of +2) N: +5 (Oxygen typically has an oxidation state of -2, and there are three oxygen atoms in NO3. Therefore, the nitrogen atom must have an oxidation state of +5 to balance the charges) O: -2 (Oxygen typically has an oxidation state of -2)

4) KCl: K: +1 (K is an alkali metal and typically has a +1 oxidation state) Cl: -1 (Chlorine typically has an oxidation state of -1)

5) Sr2SiO4: Sr: +2 (Strontium typically has an oxidation state of +2) Si: +4 (Silicon typically has an oxidation state of +4) O: -2 (Oxygen typically has an oxidation state of -2)

6) AgSiO3: Ag: +1 (Silver typically has an oxidation state of +1) Si: +4 (Silicon typically has an oxidation state of +4) O: -2 (Oxygen typically has an oxidation state of -2)

7) CrCo3: Cr: +3 (Chromium typically has an oxidation state of +3) Co: +2 (Cobalt typically has an oxidation state of +2) O: -2 (Oxygen typically has an oxidation state of -2)

8) Al2(SO4)3: Al: +3 (Aluminum typically has an oxidation state of +3) S: +6 (Oxygen typically has an oxidation state of -2, and there are four oxygen atoms in SO4. Therefore, the sulfur atom must have an oxidation state of +6 to balance the charges) O: -2 (Oxygen typically has an oxidation state of -2)

9) FePO4: Fe: +3 (Iron typically has an oxidation state of +3) P: +5 (Oxygen typically has an oxidation state of -2, and there are four oxygen atoms in PO4. Therefore, the phosphorus atom must have an oxidation state of +5 to balance the charges) O: -2 (Oxygen typically has an oxidation state of -2)