A) MCl > Ml > MBr > MF
B) MF > MCl > MBr > Ml
C) MF > MCl >, MI > MBr
D) Al > MBr > MCl > MF
Correct Answer: D
Solution :
Key Idea According to Fajan's rule, Covalent character \[{{E}^{o}}=0.337V\] \[C{{u}^{2+}}+{{e}^{-}}\xrightarrow[{}]{{}}C{{u}^{+}},\] In the given options, cation is same but anions are different. Among halogens the order of size is\[{{E}^{o}}=0.153V\] \[Cu+{{e}^{-}}\xrightarrow[{}]{{}}Cu,\]Order of covalent character is \[{{N}_{2}}+3{{H}_{2}}\xrightarrow[{}]{{}}2N{{H}_{3}},\]
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