A dot and cross diagram for sodium chloride suggests that it is made up of pairs of sodium and chloride ions. It is not. A 3D construction model shows how the ions are arranged in a lattice structure.
BEND, Ore. (KTVZ) -- An $80,000 3D laser scanner is helping Bend police with investigations at major crime scenes, providing greater accuracy while freeing officers for other duties. The Bend Police ...
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