How to find co-ordination number of Al in Al2O3 and Na in Na2CaMg(PO4)2?

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Anton Vrdoljak

Hi Ishant Kumar Barjatia,

Search for an answer on Google (type: calculate the coordination number), you will find many nice answers...

Best,

Shilpa kamboj Mirok

The coordination number of Al be 4, with whole charge -2.

Article Coordination nonequivalence of aluminum atoms in ?Al2O3

The coordination number of Na be 1 since this is neutral.