given the following ionic radii/nm; Li+ = 0.078, F- = 0.731, Rb+ = 0.149, Br- = 0.149. What type of structure would you expect for (a) LiF and (b) RbBr?

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Crystallography

Crystallography is the category of science that focuses on the atomic and molecular arrangements with their bonding constituting the crystal structure. It is derived experimentally and originated in the year 1912. It is a combination of two words; those are crystal, meaning a cold drop, and graph, meaning writing.