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Magnesium occurs in nature largely as Mg...

Magnesium occurs in nature largely as `MgCO_3` but beryllium never occurs as `BeCO_3`. Explain.

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The strong poiarising power of `Be^(2+)` ion makes `BeCO_3` unstable in nature.
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CHHAYA PUBLICATION-s-BLOCK ELEMENTS -EXERCISE (SHORT-TYPE QUESTIONS)
  1. Beryllium chloride hydrate loses no water over P4O(10)- why?

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  2. An aqueous solution of Be(NO3)2 is strongly acidic. Explain.

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  3. Magnesium occurs in nature largely as MgCO3 but beryllium never occurs...

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  4. The crystalline salts of alkaline earth metals contain more water of c...

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  5. Out of Na and Mg which one has higher second ionisation enthalpy? Why?

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  6. The hydroxides and carbonates of Na and K are readily soluble in water...

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  7. BeO is insoluble but BeSO4 is soluble in water. Explain.

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  8. BaO is soluble but BaSO4 is insoluble in water why?

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  9. The chloride of a metal is soluble in an organic solvent. The chloride...

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  10. The halides of berylium dissolve in organic solvents but those of bari...

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  11. Which out of Ca(OH)2 and Mg(OH)2 is more soluble in water and why ?

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  12. MgCO3 is more soluble in water than CaCO3. Give reason.

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  13. Which out of Mg(OH)2 & Ca(OH)2 is a stronger base and why ?

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  14. Anhydrous CaCl2 is used as a dehydrating agent- why?

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  15. Discuss the biological importance of Ca^(2+) and Mg^(2+) ions.

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  16. Discuss the biological importance of Na^(+) and K^(+) ions.

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  17. Lil is more soluble than KI in ethanol. Explain.

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  18. MgSO4 is more soluble in water than SrSO4 and decomposes at a much low...

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  19. The aqueous solution of sodium carbonate is alkaline - why?

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  20. K2CO3 cannot be prepared by Solvay process - why?

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