In order to obtain the most surface information on a sample with topographical contrast, all of the conditions below will improve this, except which one?

Hexagonal closed packed (HCP) structures follow ABCABCABC… packing sequence

Calculate the radius of a vanadium atom, given that V has a BCC crystal structure, a density of 5.96 g/cm3, and an atomic weight of 50.9 g/mol.

Index the illustrated directions in the unit cubic cell drawn below. 

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

3. The nontreponemal antibody produced by syphilis-infected patients can also be produced by patients with other conditions.  What are the non-treponemal tests?

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.