Solid State Question 214

What is the coordination number of sodium in $ Na_2O $ solid structure?

[AIIMS 2003]

Options:

6

4

8

2

Show Answer

Answer:

Correct Answer: B

Solution:

In $ Na_2O, $ each oxide ion $ ({{O}^{2-}}) $ is co-ordinated to $ 8Na^{+} $ ions and each $ Na^{+} $ ion to 4 oxide ions. Hence it has 8 : 4 co-ordination.



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