a. "Stability of a crystal is reflected is reflected in the magnitude of its melting points" Comment.
b. Melting points of some compounds are given below water `= 273 K`, ethyl alcohol `= 153.7 K`, diethyl ether `= 156.8 K`, methane `= 90.5 K`. What can you say about the intermolecular forces between the molecules of these compounds?

Explanation

Stability of a crystal is reflected in the magnitude of its melting point .
Explanation .
`to ` The stability of a crystal mainly depends upon the magnitude of forces of attraction between the constituent particles .
`to` As the attractive forces between the constituent particles increases stability of the crystal also increases .
`to` As the stability of crystal increases melting point of solid will be higher .