(a) ' Stability of a crystal is reflected in the magnitude of its melting point . Comment (b) The melting points of some compounds are given below : water = 273 K ,Ethyl alcohal= 155.7 K , Diethyl ether = 156.8 K , Methane = 90.5kK what can you say about the intermolecular forces between these molescular ?

(a) ' Stability of a crystal is reflected in the magnitude of its melt

1.	(a) ' Stability of a crystal is reflected in the magnitude of its melting point . Comment (b) The melting points of some compounds are given below : water = 273 K ,Ethyl alcohal= 155.7 K , Diethyl ether = 156.8 K , Methane = 90.5kK what can you say about the intermolecular forces between these molescular ?
Answer» Solution :(a) Higher the METING point, greater are the forces holding the consituent particles together and hence greater is the stability. (b)The intermolecular forces in water and entyl alcohalare mainly the hydrogen BONDING. Higher MELTING point of water than alcoholshows that hydrogen bonding in ETHYL alcohol molecules is not are strong as in water molecules. Diethyl ether is a POLER molecule. The intermolecular forces present in them are dipolediple attraction. Methane is a non-polar molecular.The only forces present in them are the weak van der Waal's forces ( London dispersion forces).