The structure of ZrV₂O₇ can be derived from the structure of NaCl by replacing Na+

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with Zr** and CI with V0, pyrovanadate groups. The coordination environment of zirconium is octahedral while the local coordination at vanadium is tetrahedral. One of the seven oxygen atoms, O(1), does not bond to Zr, while the other six equivalent oxygens, O(2), bond to both Zr and V. (a) Construct a bond graph (Section 1.3.1) for ZrV07. (b) What are the idealized valences for the V-O(1), V-O(2), and Zr-O(2) bonds? (c) Given bond-valence parameters R-o-1.928 and RV-0- 1.803 A calculate the expected V-0(1), V-O(2), and Zr-O(2) bond distances.