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Shape and Geometry Using VSEPR

The co-ordina...

Question

The co-ordination number of a sodium ion in a sodium chloride lattice is:

A

6

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B

8

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C

5

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D

4

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Solution

The correct option is A 6
Ionic compunds exists as a regular three dimensional arrangement of ions in solid state. This is called a lattice. The number of oppositely charged ions surrounding an ion is called it's co-ordination number. The co-ordination number of sodium in a sodium chloride lattice is 6.

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