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1) False
Face centered cubic has less empty space in its crystal packing
than does simple cubic.
For fcc structure, 26% of the unit cell is empty.
For fcc structure, 48% of the unit cell is empty.
2) False
When temperature is increased, the solubility of solid in solvent
increases and the solubility of gas in solvent decreases.
3) False
half life periods.
The percentage of C-14 that it still contains will be
%
4) True
Hydrogen is non polar molecule. Hence, only lodon dispersion forces
will be present.
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