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MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
How many unit cells are present in a cubeshaped ideal crystal of NaCl of mass 1.00 g? [Atomic masses: Na = 23, Cl = 35.5]
A
5.14 $$\times$$ 1021 unit cells
B
1.28 $$\times$$ 1021 unit cells
C
1.71 $$\times$$ 1021 unit cells
D
2.57 $$\times$$ 1021 unit cells
2
AIEEE 2002
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Na and Mg crystallize in BCC and FCC type crystals respectively, then the number of atoms of Na and Mg present in the unit cell of their respective crystal is :
A
4 and 2
B
9 and 14
C
14 and 9
D
2 and 4
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