Question

name two solids whose melting points are less than the boiling point of water

Answer 1

Many Solids have High Boiling points and melting points.
Water boiling point is 100°C.
But few solids have melting point less than water. 

Few examples are:
1.Sodium        = Symbol Na--- has melting point 98°C
2.Potassium   =Symbol K---has melting point 63°C
3.Cesium        =Symbol-Cs --- Has melting point 30°C

Answer 2

Different solids turn into liquids or melt at different temperature. Some solids are made up of molecules that bind together tightly and others are made up of molecules that binds together loosely. It means that tighter the binding, the higher the temperature needed to make them melt. Most of the solids have high melting point than the boiling point of water. There are some solids which have melting points less than the boiling point of water. These are as follows.

1) Sodium - Its melting point is 371 Kelvin or 98 Degree Celsius.

2) Gallium - Its melting point is 303 Kelvin or 30 Degree Celsius.

3) Potassium - Its melting point is 336 Kelvin or 63 Degree Celsius.