What is the coordination number of sodium in Na_(2)O ?

1.	What is the coordination number of sodium in Na_(2)O ?
Answer» 6 4 8 2 Solution :In `Na_(2)O,O^(2-)`ions adopts f.c.c. LATTICE in which `NA^(+)`ions are present at all tetrahedral SITES. `THEREFORE`Co-ordination number of `Na^(+)`ion =4

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