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Which is correct in increasing order of ...

Which is correct in increasing order of ionic character ?

A

`AlCl_(3) lt MgCl_(2) lt NaCl`

B

`LiI lt LiBr lt LiCl lt LiF`

C

`NaCl gt MgCl_(2) lt AlCl_(3)`

D

None of the above

Text Solution

Verified by Experts

The correct Answer is:
A, B
Apply Fajans' rule (low charge, large cation, small anion and hence more ionic)
a. `Na^(+1)Cl gt Mg^(+2) Cl_(2) gt Al^(+3)Cl_(3)` (Check the charges)
b. `LiF gt Li Cl gt Li Br gt Li I` (Check the sizes of anion)
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