Question

which substance has 776 as a melting point​

Answer 1

Answer:K+ is a larger ion than Na+. Therefore the K+ and Cl- ions can't get as close as the do with Na+ and Cl-. That results in a lower bond energy for KCl,

So a lower KCl boilng point results because less thermal energy is needed to break the bond.

Explanation:

Answer 2

which substance has 776 as a melting point.

Answer:- K+ is a larger ion than Na+. Therefore the K+ and Cl- ions can't get as close as the do with Na+ and Cl-. That results in a lower bond energy for KCl,

So a lower KCl boilng point results because less thermal energy is needed to break the bond.