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The symbols of some of the ions are giv...

The symbols of some of the ions are given below :
`K^(+) , Al^(3+) , Br^(-) , O^(2-)`
Using this information, write down the formulae of :
(i) Aluminium bromide
(ii) Potassium oxide

Text Solution

Verified by Experts

(i) Formula for aluminium bromide

Thus, the formula for aluminium bromide is `AlBr_(3)`.
Please write the formula for potassium oxide yourself. The correct formula will be `K_(2)O`.
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LAKHMIR SINGH & MANJIT KAUR-ATOMS AND MOLECULES-Exercise
  1. The symbols of some of the ions are given below : K^(+) , Al^(3+)...

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  2. Write the full form of IUPAC.

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  3. Name the scientist who gave : (a) law of conservation of mass. ...

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  4. Name the law of chemical combination : (a) Which was given by Lavo...

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  5. Name the scientist who gave atomic theory of matter.

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  6. Which postulate of Dalton’s atomic theory is the result of the law o...

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  7. Which postulate of Dalton’s atomic theory can explain the law of def...

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  8. Which ancient India philosopher suggested that all matter is composed...

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  9. Name any two laws of chemical combination.

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  10. If 100 grams of pure water taken from different sources is decomposed ...

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  11. If 100 grams of calcium carbonate (whether in the form of marble or ...

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  12. What are the builiding blocks of matter ?

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  13. How is the size of an atom indicated ?

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  14. Name the unit in which the radius of an atom is usually expressed.

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  15. Write the relation between nanometre and metre.

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  16. The radius of an oxygen atom is 0.073 nm. What does the symbol 'nm' ...

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  17. State whether the following statement is true or false : The symbol...

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  18. Define 'molecular mass' of a substance.

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  19. What is meant by saying that 'the molecular mass of oxygen is 32'...

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  20. Fill in the following blanks with suitable words : (a) In water , t...

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  21. (a) Name the element used as a standard for atomic mass scale. (b) W...

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