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How would you expalain the following obs...

How would you expalain the following observation?
(i)`BeO` is almost insoluble but `BeSO

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When small cation combines with small anion lattice energy is very high.So the lattice energy of BeO is more than its hydration energy .Hence BeO is insoluble.
When small beryllium ion combines with large anion the lattice energy decrease in hydration energy is less than hydration energy .Hence `BeSO_(4)` is soluble in water .
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VGS PUBLICATION-BRILLIANT-THE s-BLOCK ELEMENTS -Short Answer Questions (4 Marks)
  1. Give an account of the properties of washing soda.

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  2. Mention some uses of sodium carbonate.

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  3. How do you obtain pure sodium chloride from a crude sample?

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  4. What do you know about Castner-Kellner process? Write the principle in...

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  5. Write a few applications of caustic soda.

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  6. Give an account of the biological importance of Na^(+) and K^(+) ions.

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  7. Mention the important uses of Mg metals.

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  8. Show that Be(OH)(2) is amphoteric in nature.

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  9. Write a note on the anomalous behaviour of beryllium.

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  10. Be shows diagonal relationship with Al. Disicuss.

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  11. What is Plaster of Paris? Write a short note on it.

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  12. In what ways lithium shows similarities to magnesium in its chemical b...

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  13. When an alkali metal dissolves in liquid ammonia the solution can acqu...

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  14. What happens when (i) Sodium metal is dropped in water?

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  15. What happens when (ii) Sodium metal is heated in a free supply of ai...

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  16. What happens when (iii) Sodium peroxide dissolves in water ?

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  17. State as to why (i) An aqueous solution of Na(2)CO(3) is alkaline.

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  18. State as to why (ii) Alkali metals are prepared by the electrolysis ...

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  19. How would you expalain the following observation? (i)BeO is almost i...

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  20. How would you expalain the following observation? (ii)BaO is soluble...

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