following does not represent the ground state electronicconfigurationof the atom.a) [Ar] 3d4s!b) [Ar) 3d'4sc) [Ar] 3d$4s?d) [Ar] 3d104s

It seems like there's a typo in your question, but I'll try to answer it as best as I can.

The ground state electronic configuration of an atom is the state of lowest energy, where all electrons are in the lowest possible energy levels.

The electron configuration is often simplified by using the symbol of the previous noble gas in the periodic table to represent the core electrons. In this case, [Ar] is used, which stands for Argon and represents the electron configuration of Argon (1s2 2s2 2p6 3s2 3p6).

a) [Ar] 3d4 4s1: This configuration is incorrect because after the 3d orbital, the 4s orbital is filled. So it should be [Ar] 4s2 3d4.

b) [Ar] 3d1 4s2: This configuration is correct. The 4s orbital is filled before the 3d orbital starts filling.

c) [Ar] 3d5 4s2: This configuration is correct. The 4s orbital is filled before the 3d orbital starts filling.

d) [Ar] 3d10 4s2: This configuration is correct. The 4s orbital is filled before the 3d orbital starts filling.

So, the option that does not represent the ground state electronic configuration of the atom is a) [Ar] 3d4 4s1.