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Homework #6

# Homework #6 - Halite Sylvite Diamond Quartz 2 Given the...

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Exercise #6 Due BEFORE CLASS on November 10, 2010 Rules: You may use any reference you would like. You are encouraged to help each other, but please write your own answers. Remember, no late work is accepted. Please – clearly identify your answers (circle them). - staple your pages together if you have more than one page. 1) For the following minerals, write their chemical formula. Then use electronegativity values (table 3.4 in your text) to calculate their percentage ionic bonding.
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Unformatted text preview: Halite Sylvite Diamond Quartz 2) Given the following ionic radii, calculate the radius ratios and coordination numbers for the following pairs of ions. What type of coordination polyhedron would form around each cation? What is the value of the evb for each bond in the coordination polyhedra? Ionic Radii: C = 0.26 Å Na =1.16 Å Ca = 1.14 Å P = 0.52 Å Al = 0.68 Å O = 1.26 Å Cl = 1.81 Å F = 1.19 Å Ion Pairs: (1) C 4+ – O 2-(2) Na +- Cl-(3) Ca 2+- F-(4) P 5+- O 2-...
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