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An element X shows two valencies i.e. 2 ...

An element X shows two valencies i.e. 2 and 4. Write the formula of its oxides.

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MBD-ATOMS AND MOLECULES -Example
  1. Give the chemical names of five such compounds and give their trivial ...

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  2. Calculate :The number of atoms,in 46 g of Na

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  3. An element X shows two valencies i.e. 2 and 4. Write the formula of it...

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  4. Write the formula of the following salts :Zinc carbonate

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  5. Write the formula of the following salts : Ammonium sulphate

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  6. Write the formula of the following salts :Barium chloride

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  7. Write the formula of the following salts :Sodium nitrate

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  8. Write the formula of the following salts :Lead hydroxide

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  9. Write the formula of the following salts : Potassium permanganate

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  10. Write the names of the following compounds :Al2(SO4)3

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  11. Write the names of the following compounds :Mg(HCO3)2

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  12. Write the names of the following compounds : (NH4)2S

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  13. Write the names of the following compounds : KMnO4

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  14. Write the names of the following compounds :KClO3

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  15. Weight of copper oxide obtained by treating 2.16 g metallic copper wit...

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  16. In water molecule the ratio by mass in which hydrogen and oxygen react...

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  17. Calculate the formula masses of the compounds whose formula are given ...

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  18. Calculate the formula masses of the compounds whose formula are given ...

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  19. Calculate the formula masses of the compounds whose formula are given ...

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  20. What is the weight of 0.1 mole of HCl ?

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