Nickel is face-centred cubic with a unit cell of side 352 pm. What is the number of
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Nickel is face-centred cubic with a unit cell of side 352 pm. What is the number of atoms per square centimeter exposed on a surface formed by
(a) (100),
(b) (110),
(c) (11l) planes? Calculate the frequency of molecular collisions per surface atom in a vessel containing (a) hydrogen, (b) propane at 25°C when the pressure is (i) 100 Pa, (ii) 0.10 μTorr.
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