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The oxides of alkali and alkali earth me...

The oxides of alkali and alkali earth metals are basic and the their strenght increases down the group. The solubility of carbonates and sulphates of alkali and earth metals shown opposite trends. Only the carbonates of Li and alkaline earth metals decompose on heating. The bicarbonates of both alkali and alkali earth metals on heating give carbonates
The correct decreasing order of basic character of the oxides is

A

`K_(2)OgtMgOgtSrOgtCs_(2)O`

B

`Cs_(2)OgtK_(2)OgtSrOgtMgO`

C

`MgOgtSrOgtK_(2)OgtCs_(2)O`

D

`Cs_(2)OgtK_(2)OgtMgOgtSrO`

Text Solution

Verified by Experts

The correct Answer is:
B
As electropositive character of metal in metal oxide increases basic character increases
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The oxides of alkali and alkali earth metals are basic and the their strenght increases down the group. The solubility of carbonates and sulphates of alkali and earth metals shown opposite trends. Only the carbonates of Li and alkaline earth metals decompose on heating. The bicarbonates of both alkali and alkali earth metals on heating give carbonates indentify the correct order of thermal stablities

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AAKASH SERIES-ALKALINE EARTH METALS-LECTURE SHEET (STRAIGHT OBJECTIVE TYPE QUESTIONS
  1. Which of the following is correct regarding the solubility of alkaline...

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  2. Melting point is highest for

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  3. Which salt gives crimson colour in flame

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  4. Which of the following metallic chloride has covalent character

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  5. The II A carbonate that decomposes at room temperature of 25^(@) C is

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  6. Which of the following hydroxides is the strongest base.

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  7. The compound 'A' on heating gives a colourless gas and a residue. The ...

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  8. The ion having highest mobility in aqueous solution is

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  9. The compounds(s) of alkaline earth metals, which are amphoteric in nat...

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  10. The correct statement is / are

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  11. The compound(s) which have -O-O- bond (s) is / are

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  12. Na(2)SO(4) is water soluble but BaSO(s) is insoluble because

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  13. Which of the following statements are false?

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  14. Both alkali metals and alkaline earth metals are s - block elements. T...

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  15. Both alkali metals and alkaline earth metals are s - block elements. T...

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  16. Both alkali metals and alkaline earth metals are s - block elements. T...

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  17. The oxides of alkali and alkali earth metals are basic and the their s...

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  18. The oxides of alkali and alkali earth metals are basic and the their s...

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  19. Match the following columns

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  20. Match the following columns

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