This is for Inorganic Chemistry, please show as much details as possible. 1. (3

Question

This is for Inorganic Chemistry, please show as much details as possible.

1. (3 points) Potassium iodide has a FCC unit cell of iodide ions with potassium ions in octahedral holes. The density of KI is 3.12g/cm What is the length of one side of the unit cell? Use these ion radius values: rK 133pm and rl 220 pm Show your work. 2. (3 points) One way of viewing the unit cell of Perovskite was illustrated in lecture. Another way is shown here. a) Prove that this view also lead to a formula of CaTiO3 by drawing the z-level diagram and indicating the ratio of ions inside the unit cell. Ca2 4+ Perovskite unit cell b) If the density of the solid is 4.10g/cm3what is the length of a side of the unit cell? 3. (4 points) For each normal spinel below, what ions (i.e. number of, symbol and charge) are involved and in what types of holes are they found? a) CoAl204 b) SnCo204

Explanation / Answer

4) kcl <k2S <CaS <CaO

5) MgO has highest lattice energy

Mgs has highest lattice energy

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