Improper match among the following is

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B > Tl > In > Ga > Al...Electronegativity

BCl3 > AlCl3 > GaCl3 > InCl3... Lewis acid strength

PbO2 > SnO2> GeO2 > CO2.... Oxidizing Power

PbO2 > SnO2>SiO2 > CO2.... Acidic strength

answer is D.

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Detailed Solution

PbO2 & SnO2 ... amphotericSiO2 & CO2 ...acidicDown the group acidic oxide character decreases

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