s-Block ElementsHard
Question
Which of the following has the highest melting point?
Options
A.NaCl
B.NaF
C.NaBr
D.NaI
Solution
According to Fajan′s rule NaF has highest ionic character because of smaller size of anion F-. So NaF has highest melting point. The order of melting point is generally fluoride > chloride > bromide > iodide.
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