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An element X has valency 3 while the ele...

An element X has valency 3 while the element Y has valency 2. Write the formula of the compound berween X and Y

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The formula of the compound between X and Y is `X_(2)Y_(3)`.
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DINESH PUBLICATION-ATOMS AND MOLECULES-VERY SHORT ANSWER QUESTIONS
  1. An element Z forms an oxide with formula Z,O3. What is its valency?

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  2. The valency of an element A is 4. Write the formula of its oxide.

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  3. An element X has valency 3 while the element Y has valency 2. Write th...

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  4. Formula of the carbonate of a metal M is M(2)CO(3). Write the fomula o...

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  5. What do you understand from the statement "relative atomic mass of sul...

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  6. Calculate the formula unit mass of CaCl(2).

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  7. Which of the following represents the correct chemical formula? (i) ...

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  8. Sample A contains one gram molecules of oxygen molecules and sample B ...

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  9. Gram molecular mass of ammonia (NH(3)) is 17 g Is it correct to regard...

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  10. Give one example each of polyatomic element and polyatomic ion

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  11. Name the element which is used as a reterence for the atomic masses of...

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  12. Four samples of water [H(2)O] are collected from different sources, Ea...

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  13. Identify the cations and anions in the following compounds: (a)CH(3)...

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  14. Classify the following based on atomicity (a) O(3) (b)P(4) (c )Sg.

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  15. Which of the following symbols of elements are incorrect? Write correc...

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  16. Give the example of trivalent cation and monovalent anion. Write the f...

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  17. Name the compound Al(2)(SO(4))(3), and mention the ions present in it.

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  18. Write the formulae and the names of the ions formed by the combination...

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  19. Name a non-metal which is tetratomic.

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  20. Name the cation and anion which constirute the molecule of magnesium o...

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