A) \[LiCl,\,NaCl,\,BeC{{l}_{2}}\]
B) \[BeC{{l}_{2}},NaCl,LiCl\]
C) \[NaCl,LiCl,BeC{{l}_{2}}\]
D) \[BeC{{l}_{2}},LiCl,NaCl\]
Correct Answer: C
Solution :
According to Fajans rule, \[Covalent\text{ }character\text{ }\propto \frac{1}{size\,of\,cation}\] (when anion is same) Covalent character \[\propto \] charge of cation Na and \[Li\] have \[+1\] charge while Be has \[+2\]charge. Moreover, the order of size is \[Be<Li<Na\] Thus, the order of covalent character is \[BaC{{l}_{2}}>LiCl>NaCl\]
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