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212cm^(3) hydrogen gas is adsorbed unifo...

`212cm^(3)` hydrogen gas is adsorbed uniformly at the surface of 5 g palladium at `273^(@)` & 2 atm . If the effective surface area of each hydrogen molecule is `0.4 nm^2` , then which of the following option is incorrect? (Given R= 0.084 L atm `mol ^-1 K^-1` , `frac{1}{0.082}` = 12.2
A) No:of molecules of `H_2` adsorbed is `3times10^21`
B) No;of moles of `H_2` adsorbed is `5times10^-3`
C) Total area occupied by `H_2` molecules is `1.2times10^7 m^2`
D) Specific surface area of palladium is `2.4 times 10^7 cm^2 / g`

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