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What is the co-ordination number of calcium ion and fluoride ion in calcium fluoride respectively? CaF 2

What is the co-ordination number of calcium ion and fluoride ion in calcium fluoride respectively? CaF2

Grade:12

3 Answers

Avinash
askIITians Faculty 1241 Points
8 years ago
Simple ionic structures are described by two coordination numbers, one for each type of ion. Calcium fluoride (CaF2) is an (8, 4) structure, meaning that each cation Ca2+ is surrounded by eight F− anion neighbors, and each anion F− by four Ca2+.
So coordination number of Ca+2 and F- ion in CaF2 crystal are 8 and 4 resp.
Krish Gupta
askIITians Faculty 82 Points
3 years ago
CaF2 crystal are 8 and 4 resp.type structure questions are one such topic wherein not much is focussed.Simple ionic structures are described by two coordination numbers, one for each type of ion. Calcium fluoride (CaF2) is an (8, 4) structure, meaning that each cation Ca2+ is surrounded by eight F− anion neighbors, and each anion F− by four Ca2+.So coordination number of Ca+2 and F- ion in 2 Hi, this is a good question beacuse AB
Yash Chourasiya
askIITians Faculty 256 Points
3 years ago
Dear Student

The Ca2+and F−are located in CaF2​ crystal respectively at face-centred cubic lattice points and in tetrahedral voids.
It is 8:4 arrangement, the coordination number of Ca2+and F−ions is 8 and 4 ions respectively.

I hope this answer will help you.
Thanks & Regards
Yash Chourasiya

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