Dolomite has a very similar structure in which Mg substitutes for Ca in alternating layers. Assume that Ca2+ has an ionic radius of 100 picometers and Mg2+ has an ionic radius of 72 picometers. Using your knowledge of crystal chemistry, would you expect significant substitution of Mg for Ca in calcite or Ca in the Mg site in dolomite?
Dolomite has a very similar structure in which Mg substitutes for Ca in alternating layers. Assume that Ca2+ has an ionic radius of 100 picometers and Mg2+ has an ionic radius of 72 picometers. Using your knowledge of crystal chemistry, would you expect significant substitution of Mg for Ca in calcite or Ca in the Mg site in dolomite?
Chemistry
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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Chapter1: Chemical Foundations
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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Dolomite has a very similar structure in which Mg substitutes for Ca in alternating
layers. Assume that Ca2+ has an ionic radius of 100 picometers and Mg2+ has an
ionic radius of 72 picometers. Using your knowledge of crystal chemistry, would you
expect significant substitution of Mg for Ca in calcite or Ca in the Mg site in
dolomite?
layers. Assume that Ca2+ has an ionic radius of 100 picometers and Mg2+ has an
ionic radius of 72 picometers. Using your knowledge of crystal chemistry, would you
expect significant substitution of Mg for Ca in calcite or Ca in the Mg site in
dolomite?
Expert Solution
Step 1: Substitution of Ions in crystals
In crystal structures, the elements with similar charges and sizes can replace one another. This does not lead to any charge imbalance in the compound.
The substitution of one ion by the other greatly depends on their relative ionic radius values.
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