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What is the valency of : fluorine in ...

What is the valency of :
fluorine in `CaF_2`

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ICSE-THE LANGUAGE OF CHEMISTRY-EXCERCISE 1(C )
  1. What are poly atomic ions? Give two examples?

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  2. Name the fundamental law that is involved in every equation.

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  3. What is the valency of : fluorine in CaF2

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  4. What is the valency of : sulphur in SF6

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  5. What is the valency of : phosphorus in PH3

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  6. What is the valency of carbon?

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  7. What is the valency of : nitrogen in the N2O3

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  8. What is the valency of : nitrogen in the N2O5.

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  9. What is the valency of : nitrogen in the NO2

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  10. What is the valency of : nitrogen in the NO

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  11. What is the oxidation state of : Manganese in MnO2

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  12. What is the oxidation state of : Copper is Cu2O

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  13. What is the oxidation state of : Magnesium in Mg3N2.

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  14. Why should an equation be balanced ? Explain with the help of a simple...

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  15. Write the balanced chemical equation of the following word equation. ...

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  16. Write the balanced chemical equation of the following word equation. ...

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  17. Write the balanced chemical equation of the following word equation. ...

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  18. Write the balanced chemical equation of the following word equation. ...

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  19. Write the balanced chemical equation of the following word equation. ...

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  20. Write the balanced chemical equation of the following word equation. ...

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