Difference between sublimation and vaporization as follows :
Sublimation : It is a process of direct conversion of solid phase into vapor phase without involving liquid phase. For example camphor shows sublimation.
Vaporization :
It is the process of conversion of liquid phase to vapor phase. For example, the conversion of water to gas.
mass number is now 4 times less than the original value so alpha decay occur during alpha decay the mass number is decreased 4 times and atomic number decreased 2 times than the original value
Saturn's rings are made of billions of pieces of ice, dust and rocks. Some of these particles are as small as a grain of salt, while others are as big as houses.