White lead has one of the following properties:
Correct answer: C. Amorphous
- A. Acidic
- B. Crystalline
- C. Amorphous
- D. Neutral
Explanation
White lead, like most pigments precipitated from solution, sets as an amorphous solid: its particles have no long-range ordered lattice, so it shows no sharp melting point and no definite geometric shape. A crystalline solid has that ordered repeating lattice, which white lead lacks.
This question appeared on the UHS MDCAT 2010 paper, which you can sit online with every answer explained.
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Solids are classified by particle arrangement and bonding into crystalline, ionic and molecular forms. Questions cover crystal lattices, the shapes and properties of ionic crystals, and lattice energy, including how ion charge and ionic size affect the strength of attractions within an ionic solid.
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