What is the coordination number of aluminium in mineral cryolite ? – InterviewSolution

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1.	What is the coordination number of aluminium in mineral cryolite ?
Answer» SOLUTION :CRYOLITE is `3NaF. AIF_3` or `Na_3[AIF_6]`. It gives that COORDINATION number of ALUMINIUM is six.It can expand its covalency by using empty d-orbitals.

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