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Which one of the following alkaline earth metal sulphates has
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Which one of the following alkaline earth metal sulphates has its hydration enthalpy greater than its lattice enthalpy?

A

B

C

D

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Updated on: May 6, 2023

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Arihant Chemistry JEE Main Chapterwise Solutions (2019-2002) (Arihant)

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Exam:

JEE Mains 2015

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Which one of the following alkaline earth metal sulphates has its hydration enthalpy greater than its lattice enthalpy?
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As we move down the group, size of metal increases. Be has lower size while has bigger size, that's why breaks easily and lattice energy becomes smaller but due to lower size of Be, water molecules are gathered around and hence hydration energy increases. On the other hand, rest metals i.e. , Sr have bigger size and that's why lattice energy is greater than hydration energy. Smaller sized atom has more hydration energy. Thus, in this question Be is placed upper most in the group has lesser size and not comparable with the size of sulphates. Hence, is the right response.
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Question Text
Which one of the following alkaline earth metal sulphates has its hydration enthalpy greater than its lattice enthalpy?
Updated OnMay 6, 2023
TopicThe s-Block Elements
SubjectChemistry
ClassClass 11
Answer TypeText solution:1 Video solution: 4
Upvotes450
Avg. Video Duration4 min