Which of the following solids would be expected to display the highest melting point? a) NaCl b) SrBr2 c) CBR4 d) MgCl2 e) C12H2

The ionic compound, CsBr, forms a body centered cubic structure (see below) where the anions occupy the corners of the crystal (red) and the cations the body centered position (green). If the ionic radius of Cs +, Br − are 169 pm and 195 pm respectively, what is the density (in g/cm 3)?

Which type (or types) of crystalline solid is characterizedby each of the following? (a) High mobility of electronsthroughout the solid; (b) softness, relatively low meltingpoint; (c) high melting point and poor electrical conductivity;(d) network of covalent bonds.

12. The fictitious element Tulanium forms a body centered cubic crystal in the solid state. The molar mass of Tulanium is 165.32 g/mol and the density of the solid is 8.32 g/cm3. What is the atomic radius Tulanium? Give you answer in pm (10-10cm).