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what is the trend (decres/incre) in the solubility of alkali halides and alkaline halides. some books say diff trends for fluorides. pl tell for following two cases for each 1. when metal fixed and halogen changes down the group. 2. when halogen fixed and metal changes down the group.
Table – III
Compound
Lattice energy
Hydration* energy
Solubility
Melting point
LiCl
-845
-876
63.7
887
NaCl
-770
-776
35.7
1084
KCl
-703
-700
34.7
1039
RbCl
-674
-680
77.0
988
CsCl
-644
-646
162
925
NaF
-893
-919
4.22
1261
1028
NaBr
-730
-745
116
NaI
-685
184
944
LiF
-1005
-1019
0.27
1115
CsI
-582
-670
44.0
on the basis of data given trend in solubility of alkali metal halide can be calculated
NaI>CsCl>NaBr>and so on ................
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