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Briefly define the following terms, concepts or rules using words, equations, and/or sketches: Valance electrons

The atomic number of Na is 11 and Cl is 17. Provide electronic configuration of the Na+ ion and Cl- ion in the form of 1s2 2s2 2p6 … and compare the ion sizes relative to each other (Na+ vs Cl-) and to their neutral atom (Na+ vs Na and Cl- vs Cl) counterparts.

Indicate the type of bonding for the following material. If more than one type, include all. CaF2

Substances in which the properties are dependent on the direction of measurements are anisotropic.

Explain why covalently bonded materials are generally less dense than ionically or metallically bonded materials.

Why are polycrystalline solids are typically isotropic?

Which of the following is not a drawback to high resolution imaging at low voltage?

The equilibrium separation between two atoms can be easily found by finding the distance at which the net force between the two atoms goes to zero.

Identify the miller indices for the following planes of a face centered cubic unit cell. 

Briefly define the following terms, concepts or rules using words, equations, and/or sketches: Coordination number