Question
Question: Which of the following has the highest melting point?...
Which of the following has the highest melting point?
A
NaCl
B
NaF
C
NaBr
D
NaΙ
Answer
NaF
Explanation
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.