The following electron configurations correspond to the ground states of certain elements. Name each element.

a) [Ar]3d^10 4s^2 4p^4
b) [Ne]3s^2 3p^3
c) [Ar]3d^2 4s^2
d) [Kr]4d^1 5s^2
e) [Xe]4f^13 6s^2

Count the electrons. That will equal the protons and that is the atomic number. Look on the periodic table to identify the element.

To determine the elements corresponding to each electron configuration, we need to refer to the periodic table. The electron configuration gives us information about the arrangement of electrons in an atom's orbitals.

a) [Ar]3d^10 4s^2 4p^4
This configuration has 10 electrons in the d orbital, 2 electrons in the s orbital, and 4 electrons in the p orbital. Considering the periodic table, we find that this configuration corresponds to the element Selenium (Se).

b) [Ne]3s^2 3p^3
Here, we have 2 electrons in the s orbital, and 3 electrons in the p orbital. Based on the periodic table, this electron configuration corresponds to the element Phosphorus (P).

c) [Ar]3d^2 4s^2
This configuration has 2 electrons in the d orbital and 2 electrons in the s orbital. Referring to the periodic table, we can identify this as the element Calcium (Ca).

d) [Kr]4d^1 5s^2
Here, we have 1 electron in the d orbital and 2 electrons in the s orbital. By looking at the periodic table, we can determine that this electron configuration corresponds to the element Silver (Ag).

e) [Xe]4f^13 6s^2
This configuration contains 13 electrons in the f orbital and 2 electrons in the s orbital. Consulting the periodic table, we find that this electron configuration corresponds to the element Lutetium (Lu).