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What are polyatomic ions ? Give examples...

What are polyatomic ions ? Give examples.

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PSEB-Atoms and Molecules-EXERCISE
  1. A 0.24 g of coumpound of oxgen and boron was found by analysis to con...

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  2. What are polyatomic ions ? Give examples.

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  3. Write the chemical formula of the following :Magnesium chloride

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  4. Write the chemical formula of the following :Calcium oxide

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  5. Write the chemical formula of the following :Copper nitrate

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  6. Write the chemical formula of the following :Aluminium chloride

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  7. Write the chemical formula of the following :Calcium carbonate

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  8. Give the names of the elements present in the following compounds :Qui...

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  9. Give the names of the elements present in the following compounds :Hyd...

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  10. Give the names of the elements present in the following compounds : Ba...

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  11. .Give the names of the elements present in the following compounds :Po...

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  12. Calculate the molar mass of the following substances : EthyneC2H2

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  13. Calculate the molar mass of the following substances :Sulphur moleule,...

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  14. Calculate the molar mass of the following substances :Phosphorus molec...

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  15. Calculate the molar mass of the following substances :Hydrochloric aci...

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  16. Calculate the molar mass of the following substances : Nitiric acid,HN...

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  17. What is the mass of : 1 mole of nitrogen atoms ?

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  18. What is the mass of :) 4 moles of aluminium atoms (Atomic mass of alum...

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  19. What is the mass of : 10 moles of sodium sulphite (Na2SO3)?

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  20. Convert into moles : 12g of oxygen gas

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