Arrange the following compounds in order of increasing
solubility
(i) MgF₂ (ii) CaF₂, (iii) BaF₂
(a) (i) < (ii) < (iii) (b) (ii) < (i) < (iii)
(c) (ii) < (iii) < (ii) (d) (iii) < (ii) < (i)
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Answer:
Answer is b....................
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(iii) < (ii) < (i) is the trend.
Explanation:
- The group 3 metals of the periodic table are called the alkaline earth metals.
- These metal halides are very much insoluble in water.
- They are hygroscopic in nature.
- This is why, fused alkaline earth metal halides are used as dehydrating agents.
- The covalent character of these metal halides are responsible for their insolubility.
- The covalent character of them increase as we go down the group because of larger size of cations.
- So, the trend is (iii) < (ii) < (i).
For more information about alkaline earth metal halide solubility,
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