The sample of nephrite jade shown on page 545 has the formula Ca 2 (Mg, Fe) 5
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The sample of nephrite jade shown on page 545 has the formula Ca2(Mg, Fe)5(Si4O11)2(OH)2. (Iron in this formula is in the +2 oxidation state.)
(a) What is the charge on the (Si4O11)n− ion in this compound?
(b) What is the oxidation state of Si in this compound?
(c) What is the percent of iron in a sample of jade that has the formula Ca2(Mg0.35Fe0.65)5(Si4O11)2(OH)2?
(d) The iron ions in the formula for nephrite have the same degree of paramagnetism as seen for Fe2+ (g). How many unpaired electrons per iron ion does this represent?
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Related Book For
Chemistry And Chemical Reactivity
ISBN: 9780357001172
10th Edition
Authors: John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
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