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Classification Of Elements And Periodicity In Properties

Question
CBSEENCH11008237
Wired Faculty App

Solubility of the alkaline earth's metal sulphates in water decreases in the sequence

  • Mg>Ca>Sr>Ba

  • Ca>Sr>Ba>Mg>

  • Sr>Ca>Mg>Ba

  • Ba>Mg>Sr>Ca

Solution

A.

Mg>Ca>Sr>Ba

The solubility of the sulphates. The sulphates becomes less soluble as  you fo down the group i.e
Mg> Ca>Sr> Ba
The magnitude of the lattice energy remains almost constant as the size of the sulphate ion is so big that small increase in the size of the cation from Be to Ba does not make any difference. However, the hydration energy decreases from Be2+ to Ba2+ appreciably as the size of the cation increases down the group. The significantly high solubility of MgSO4 is due to high enthalpy of solvation on the smaller Mg2+ ions.

Some More Questions From Classification of Elements and Periodicity in Properties Chapter

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(ii) fourth period    
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What is the name given to the s-block elements?

To which block the element with outer electronic configuration 4s23d10 belongs?

Why are there 10 elements in each series of d-block?

In terms of electronic configuration,
what is common in a given period and group?

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What are the advantages of periodic classification of elements?

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