GEOLOGY
CRYSTALLOGRAPHY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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number of atoms in a body centered cubic cell is
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1
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2
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3
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4
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Explanation:
Detailed explanation-1: -In a body centred cubic unit cell, 8 atoms are present at the corners and one is the centre of the body. We know that 8 corner atoms contribute one atom (8×18=1) and one body centred atom belongs to only one unit cell. So, the total number of atoms in a body centred unit cell is 2.
Detailed explanation-2: -The BCC unit cell consists of a net total of two atoms, the one in the center and eight eighths from the corners. In the FCC arrangement, again there are eight atoms at corners of the unit cell and one atom centered in each of the faces. The atom in the face is shared with the adjacent cell.
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