When a solid is converted directly to a gas, the change of state is called?

solution:

Sublimation it has a defined as a process where solid substance gets directly transformed to gaseous state without undergoing intermediate transition to liquid state. Example: “Dry ice” which is solid Carbon dioxide and as the name suggests it undergoes phase transformation from solid state to liquid state directly without wetting or going into liquid state.

confused

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each chemical family is represented as a group or column on the periodic table. based on chemical properties, there are 6 types of chemical families. group 1 represents alkali metals, group 2 represents alkaline earth metals, groups 3 to 12 represent transition metals, groups 13 to 16 represent non-metals and other metals, group 17 represents halogens and group 18 represents noble gases.