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A metal forms cubic crystals. The mass of one unit cell of it is M/NA gram, where M is the atomic mass of the metal and NA is the Avogadro number. What is the type of cubic unit cell possessed by the metal?

A metal forms cubic crystals. The mass of one unit cell of it is M/NA gram, where M is the atomic mass of the metal and NA is the Avogadro number. What is the type of cubic unit cell possessed by the metal?

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2 Answers

Shivangi Khatter
askIITians Faculty 468 Points
5 years ago
dear student
the type of the cubic cell is simple cubic unit cell becuse effective number of unit cell will be 1 in this case
Jemimah Joseph
13 Points
3 years ago
Atomic mass (M) of an element in grams is the mass of NA(Avogadro no.) atoms of that element.So mass of one atom is equal to M/NA grams. 
Since the given mass of the unit cell is also equal to  M/NA grams, it must have exactly one atom in it.
So the type of unit cell is a simple cubic unit cell

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