Question

What are the characteristics/properties of the noble gas?

Answer 1

The elements of noble gas are helium, neon, argon, krypton, xenon, and radon. Most of their characteristics are based on the configuration and are known as noble or inert because they easily do not react.

Complete answer:
Noble gases are the elements of group 18 in the periodic table and the elements of noble gas are helium, neon, argon, krypton, xenon, and radon.
The atomic number of the elements are 2 (helium), 10 (neon), 18 (argon), 36 (krypton), 54 (xenon), and 86 (radon). They have completely filled orbitals, i.e., their last orbital is fully filled due to which their reactivity is very less and many properties rely on this.
Some characteristics are:
Each group can be represented with a general electronic configuration so, the general configuration for the noble gases are $n{{s}^{2}}n{{p}^{6}}$, where n = 1, 2, 3, 4, 5, 6.
Their ionization enthalpies are very high and in each period it is the highest because it is very difficult to extract an electron from fully filled orbitals.
Their boiling and melting points are very low.
Their solubility is very low but as we move down the group from helium to radon the solubility in water will increase.
This group is the only group in the periodic table which has positive electron gain enthalpy.
Since their reactivity is very less, some of them can form compounds with fluorine and oxygen.

Note:
The main forces of interaction between the atoms are weak van der Waal forces due to which their boiling and melting points are very low and their liquefaction is very difficult.