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Which of the following represents a corr...

Which of the following represents a correct chemical formula ?

A

`CaCl`

B

`Na_(3)N`

C

`NaSO_(4)`

D

`NaS`

Text Solution

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The correct Answer is:
B
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LAKHMIR SINGH & MANJIT KAUR-ATOMS AND MOLECULES-Exercise
  1. (a) Define 'formula unit' of an ionic compound. What is the formul...

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  2. The atomic number of an element X is 13. What will be the number of el...

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  3. Which of the following represents a correct chemical formula ?

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  4. If the number of electrons in an ion Z^(3-) is 10, the atomic number...

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  5. The anion of an element has :

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  6. A particle X has 17 protons, 18 neutrons and 18 electrons. This part...

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  7. An element which can exhibit valencies of 2, 4 and 6 can be :

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  8. The atomic number of an element E is 16. The number of electrons in i...

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  9. The cation of an element has :

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  10. Two elements X and Y have valencies of 5 and 3, and 3 and 2, respecti...

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  11. The number of electrons in an ion Y^(2+) is 10. The atomic number of e...

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  12. A particle P has 18 electrons, 20 neutrons and 19 protons. This parti...

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  13. An ionic compound will be formed by the combination of one of the foll...

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  14. Molecular compounds are usually formed by the combination between :

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  15. The formula of a compound is X(3)Y. The valencies of element X and Y ...

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  16. The formula of the sulphate of an element X is X(2)(SO(4))(3). The for...

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  17. An element A forms an oxide A(2)O(5). (a) What is the valency of ...

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  18. An element X forms the following compounds with hydrogen, ca...

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  19. If the aluminium salt of an anion X is Al(2)X(3), what is the valency...

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  20. The formula of carbonate of a metal M is M(2)CO(3). (a) What will ...

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