Consider the following electron configuration.

(σ3s)2 (σ3s*)2 (σ3p)2 (π3p)4 (π3p*)4
Select four species that, in theory, would have this electron configuration.

To select four species that would have the given electron configuration, we need to understand how electrons are distributed in atomic orbitals according to the Aufbau principle and Hund's rule.

The electron configuration you provided shows the distribution of electrons in different orbitals, including:

(σ3s)2: This means there are 2 electrons in the sigma antisymmetric 3s orbital.
(σ3s*)2: This means there are 2 electrons in the sigma symmetric 3s* orbital.
(σ3p)2: This means there are 2 electrons in the sigma antisymmetric 3p orbital.
(π3p)4: This means there are 4 electrons in the pi antisymmetric 3p orbital.
(π3p*)4: This means there are 4 electrons in the pi symmetric 3p* orbital.

Now let's select four species that can have this electron configuration.

1. Oxygen (O):
Oxygen has atomic number 8, and its electron configuration is 1s2 2s2 2p4. To match the given electron configuration, the 2s and 2p orbitals will be replaced by the 3s and 3p orbitals, respectively. The electrons will fill the orbitals in the same way, resulting in the given configuration.

2. Sulfur (S):
Sulfur has atomic number 16, and its electron configuration is 1s2 2s2 2p6 3s2 3p4. The 3s and 3p orbitals will match with the given configuration, resulting in the same electron distribution.

3. Selenium (Se):
Selenium has atomic number 34, and its electron configuration is 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p4. We will replace the 4s and 4p orbitals with the given 3s and 3p orbitals, respectively, resulting in a matching electron configuration.

4. Bromine (Br):
Bromine has atomic number 35, and its electron configuration is 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p5. By replacing the 4s and 4p orbitals with the given 3s and 3p orbitals, we get the desired electron configuration.

Remember, this is just a theoretical description based on the electron distribution. In reality, the electron configuration of atoms and ions might differ depending on various factors.