Question

The group $18$ elements are also known as:

Answer 1

Hint :We know that the elements are colorless, odorless monoatomic gases. Noble gases can diffuse through glass, rubber, plastic materials and some metals. Thus, they are difficult to be handled in laboratories. The major use of Argon is to provide an inert atmosphere in metallurgical processes.

Complete Step By Step Answer:
As we know that the periodic table groups are the vertical columns and the periods are the horizontal lines. There are eighteen groups and seven periods in the modern periodic table. Noble gases family is the group which implies that they tend to be unreactive. Characteristics of noble gases are odorless, non-flammable, colorless, and monoatomic gas with low chemical reactivity. All the noble gases conduct electricity and fluorescence which can be needed in many condition
s to maintain a constant and safe environment. All noble gases are insoluble in water. As they have a complete octet which makes them highly stable. So, they hardly react with other elements to form chemical bonds because of their less tendency to either gain or lose electrons. But exceptions are everywhere. Xenon is the exception in this case. Xenon is the noble gas that may form compounds either with fluoride or oxide.
They are also called the inert gases or the rare gases. The elements of these groups have completely filled orbitals, so they have very stable configurations. These elements due to a completely filled orbital don't have affinity to gain electrons or to lose electrons, thus known as inert gas which do not react in normal conditions. The elements are colorless, odorless monoatomic gases. Noble gases can diffuse through glass, rubber, plastic materials and some metals. Thus, they are difficult to be handled in laboratories. The major use of Argon is to provide an inert atmosphere in metallurgical processes.
Therefore, the group $18$ elements are also known as Noble gas.

Note :
Remember that the nuclear radius gets an increment as we move down the group $18$ due as we witness the increase in nuclear number. As we move from top to the bottom of the group, each progressive element will have shown the expansion by adding up new shells.