For a coordination number of four, the radius of Mn 7+ has been estimated to be 39

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For a coordination number of four, the radius of Mn7+ has been estimated to be 39 pm. Estimate the charge density for the Mn7+ ion. Express your answer in C mm–3. How does this compare with the charge density of Be2+ given in Table 21.4? Would you expect the bonding in Mn2O7 to be primarily ionic or primarily covalent? Explain.

Table 21.4

TABLE 21.4 Some Properties of Group 2 (Alkaline Earth) Metals Be 4 111 41 Atomic number Atomic (metallic)

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General Chemistry Principles And Modern Applications

ISBN: 9780132931281

11th Edition

Authors: Ralph Petrucci, Jeffry Madura, F. Herring, Carey Bissonnette

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