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What is the co-ordination number of s...

What is the co-ordination number of sodium in `Na_(2)O` ?

A

6

B

4

C

8

D

2

Text Solution

Verified by Experts

The correct Answer is:
B
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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