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What is difference between fcc and …

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What is difference between fcc and bcc

Posted by Rupesh Singh 5 years, 9 months ago

CBSE > Class 12 > Chemistry

1 answers

Yogita Ingle 5 years, 9 months ago

BCC vs FCC
The term BCC stands for the body-centered cubic arrangement of spheres (atoms, molecule or ions from which the lattice is made of).	The term FCC stands for the face-centred cubic arrangement of spheres.
Arrangement of Spheres
BCC has spheres in the eight corners of a cube and one sphere in the centre of the cube.	FCC has spheres in the eight corners of a cube and also in the centres of the cubic faces.
Coordination Number
The coordination number of the BCC structure is 8.	The coordination number of the FCC structure is 12.
Packing Factor
The packing factor of BCC is 0.68	The packing factor of FCC is 0.74
Number of Spheres in a Unit Cell
A unit cell of BCC has a net total of 2 spheres.	A unit cell of FCC has a net total of 4 spheres.
Examples
Some examples of metals that have the BCC structure include Lithium (Li), Sodium (Na), Potassium (K), Chromium (Cr) and Barium (Ba).	Some examples of the metals having FCC structure are Aluminum (Al), Copper (Cu), Gold (Au), Lead (Pb) and Nickel (Ni).

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