Question

Which shows the electron configuration for zinc (Zn)? [Kr]5s24d10 [Kr]5s24d6 [Ar]4s23d9 [Ar]4s23d10

Answer 1

The electron configuration for zinc is [AR] 4S2 3D10.  Zinc has atomic number 30 and is the first element in group 12 of the periodic table. The last option is the correct one. Electron configuration has to do with the distribution of electrons in an atom or molecule in atomic or molecular orbitals. Electronic configuration of an element is very important because it is the key to the properties of that element.

Answer 2

• The correct answer is [Ar]4s23d10

Step-by-step explanation:

[Ar]4s23d10

• The above electronic configuration has 30 electrons. As Zinc contain 30 electrons. So it will be electronic configuration of Zinc.

[Ar]4s23d9

• This is not correct configuration , however it contain 29 electron that will be of Cu. Correct E.C [Ar]4s13d10

[Kr]5s24d6 for Ru. Its correct E.C is [Kr]5s14d7.

[Kr]5s24d10 for Cd.