Welcome to ChemZipper !!!: What are coordination number (nearest neighbour) in a SCC at distance of it lattice parameter (a) and next nearest neighbour at distance (a√2) and next to next nearest neighbour at distance (a√3) ?.

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What are coordination number (nearest neighbour) in a SCC at distance of it lattice parameter (a) and next nearest neighbour at distance (a√2) and next to next nearest neighbour at distance (a√3) ?.

Coordination Number:
(1) The nearest neighbour distance is just the lattice parameter (a) therefore coordination number for a given atom in SCC unit cell is 6 (six).
(2) The next nearest neighbour are 12 at distancea/root 2 (each face diagonal in x ,y and Z plane).
(3) 3rd neighbour (Next to Next nearest neighbour) are(8) at distance a root 3 (each corner along body diagonal.

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