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Metals form basic hydroxides. Which of t...

Metals form basic hydroxides. Which of the following metal hydroxide is the least basic?

A

`Mg(OH)_(2)`

B

`Ca(OH)_(2)`

C

`Sr(OH)_(2)`

D

`Ba(OH)_(2)`

Text Solution

Verified by Experts

The correct Answer is:
A
As the ionization enthalpy increases from `Mg to Ba` , the M-O bond becomes weaker and weaker down the group and hence basicity increases down the group . Thus , `Mg(OH)_(2)` is least basic .
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PRADEEP-S-BLOCK ELEMENTS (ALKALI AND ALKALINE EARTH METALS) -NCERT EXEMPLAR PROBLEMS WITH ANSWERS , HINTS AND SOLUTIONS (MULTIPLE CHOICE QUESTIONS - I)
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  7. The order of decreasing ionisation ethalpy in alkali metals is

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  8. The solubility of metal halides depends on their nature, Lattice entha...

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  9. Amphoteric hydroxides react with both alkalies and acids. Which of the...

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  10. In the synthesis of sodium carbonate, the recovery of ammonia is done ...

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  18. Which of the following statements is true about Ca(OH)(2)?

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  20. Dehydration of hydrates of halides of calcium, barium and strontium i....

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