Question
Chemistry Question on Properties of Solids
Which of the following has the highest melting point?
A
NaCl
B
NaF
C
NaB
D
NaI
Answer
NaF
Explanation
Solution
Lattice energy is directly proportional to the charge of cation and anion whereas inversely proportional to the ion radius (F < Cl < Br < I). NaF due to its largest lattice energy has the highest melting point.