Question

Оксид кальция оксид железа (3) оксид цинка оксид серебра оксил фосфора (5) оксид марганца (7) оксид хрома(2) оксид хрома (3) оксид хрома (6)

Answer 1

СаО
Fe2O3
ZnO
Ag2O3
P2O5
Mg2O7
CrO
Cr2O3
CrO3

Answer 2

Oxides of Calcium, Iron, Zinc, Silver, Phosphorus, Manganese, and Chromium

Here are the formulas and oxidation states of the oxides you mentioned:

1. Oxide of Calcium: Calcium Oxide (CaO). The oxidation state of calcium in this compound is +2. 2. Oxide of Iron: Iron(III) Oxide (Fe2O3). The oxidation state of iron in this compound is +3. 3. Oxide of Zinc: Zinc Oxide (ZnO). The oxidation state of zinc in this compound is +2. 4. Oxide of Silver: Silver Oxide (Ag2O). The oxidation state of silver in this compound is +1. 5. Oxide of Phosphorus: Phosphorus Pentoxide (P2O5). The oxidation state of phosphorus in this compound is +5. 6. Oxide of Manganese: Manganese(IV) Oxide (MnO2). The oxidation state of manganese in this compound is +4. 7. Oxide of Chromium: Chromium(III) Oxide (Cr2O3). The oxidation state of chromium in this compound is +3. 8. Another Oxide of Chromium: Chromium(VI) Oxide (CrO3). The oxidation state of chromium in this compound is +6.

Please note that the oxidation states mentioned above are based on the information provided in the search snippets.