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An Intiative by Sri Chaitanya
a
AlF3>MgO>MgF2 : Lattice energy
b
Li>Na>Al>Mg : Electron affinity
c
SF6>PF5>SiF4 : Lewis acidic character
d
SiCl4>SiBr4>SiI4 : Decreasing order of electronegativity of Si
answer is C.
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