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The valency of iron (Fe) is 3 and oxygen...

The valency of iron (Fe) is 3 and oxygen (0) is 2.
Write the chemical formula of iron oxide

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The correct Answer is:
`Fe_2O_3`
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MAXIMUM PUBLICATION-MODEL PAPER 3-EXAMPLE
  1. What are oxidation and reduction ?

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  2. From the following statements Choose those applicable to covalent co...

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  3. The valency of iron (Fe) is 3 and oxygen (0) is 2. Write the chemic...

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  4. The chemical formula of aluminium chloride is AlCl3. Write the valenci...

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  5. Write the equation to find out the maximum number of electrons that ca...

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  6. Find out the maximum number of electrons that can be accommodated in t...

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  7. The atomic number of magnesium is 12 and Fluo¬rine is 9. Write the e...

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  8. The atomic number of magnesium is 12 and Fluo¬rine is 9. Write the e...

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  9. Classify the following compounds as ionic and covalent. (Hint:- electr...

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  10. Classify the following compounds as ionic and covalent. (Hint:- electr...

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  11. Classify the following compounds as ionic and covalent. (Hint:- electr...

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  12. Classify the following compounds as ionic and covalent. (Hint:- electr...

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  13. Balance the following chemical equations. Zn + HCl rarr ZnCl2 + H2

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  14. Balance the following chemical equations. Mg + O2 rarr MgO

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  15. Balance the following chemical equations. SO2 + O2 rarr SO3

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  16. What is a catalyst?

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  17. Write an experiment to prove the influence of a catalyst in a chemical...

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  18. What are representative elements?

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  19. What are the general characteristics of these el¬ements.

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  20. Find out the oxidation number of 'Cr' in the following compounds ?(Hin...

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