Which would you expect to have a higher melting point: sodium chloride, NaCl, or cesium chloride, CsCl? Why?
A. The cesium chloride has a higher melting point because larger ions of the same charge are able to attract more ions of the opposite charge.
B. The sodium chloride has a higher melting point because its ions are smaller, which allows oppositely charged ions to get closer.
C. The sodium chloride has a higher melting point because of the greater charges of the ions, and hence, the greater force of attractions between them.
D. The cesium chloride has a higher melting point because its ions are smaller, which makes the charges more dense.
Answer: B
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