Answer:

Electronic configuration refers to the distribution of electrons in an atom. Elements with similar electronic configuration and properties belong to the same family/group. The given electronic configurations are:

a) [Xe]4f14 5d106s2
b) [Kr]4d10 5s2
c) [Ne]3s23p5
d) [Ar]3d10 4s2

Explanation:

The electronic configuration of the elements can be written in terms of their respective shells and subshells. The first number in the electronic configuration represents the principal quantum number (n), which indicates the energy level or shell of the electrons. The letters s, p, d, and f represent the subshells, and the superscript represents the number of electrons in each subshell.

a) [Xe]4f14 5d106s2: This represents the electronic configuration of the element Xenon (Xe). It belongs to the noble gas family and has similar properties to other noble gases.

b) [Kr]4d10 5s2: This represents the electronic configuration of the element Krypton (Kr). It belongs to the same family as other noble gases and has similar properties.

c) [Ne]3s23p5: This represents the electronic configuration of the element Phosphorus (P). It belongs to the family of nonmetals, specifically the group of halogens, and has different properties than noble gases.

d) [Ar]3d10 4s2: This represents the electronic configuration of the element Calcium (Ca). It belongs to the family of metals, specifically the group of alkaline earth metals, and has different properties than noble gases.

Conclusion:

Therefore, the element that does not belong to the same family as others is Phosphorus (P) with electronic configuration [Ne]3s23p5 as it belongs to the family of nonmetals, specifically the group of halogens, whereas the other three elements belong to the family of noble gases or metals.

[ Ne] ३s२ ३p५