Final answer:
The full electron configuration of a neutral rhenium (Re) atom up to the 4f subshell is 1s²2s²2p⁶3s²3p⁶4s²3d±04p⁶5s²4d±05p⁶6s²4f±145d⁵. The molecular electron configuration for Re2 requires considering the electrons shared or involved in any kinds of bond between the two Re atoms. The formulas 2n² and 2(2l + 1) are used to confirm the number of electrons in shells and subshells, respectively.
Step-by-step explanation:
The full electron configuration of Re (Rhenium) is important to understand because Re has electrons in the f subshell. For an atom of Re, which has 75 electrons in its neutral state, the electron configuration up to the 4f subshell would be 1s²2s²2p⁶3s²3p⁶4s²3d±04p⁶5s²4d±05p⁶6s²4f±145d⁵. However, since Re2 is a molecular species, typically shortened as Re2, the question of its electron configuration is more complex and depends on the exact nature of the bond between the two Re atoms. For the individual metal in this dimer, standard neutral rhenium electron configurations apply before considering any alterations due to bonding.
When calculating electron configurations, it's important to verify by adding the superscripts, which indicate the number of electrons, and ensuring that the total corresponds to the atomic number of the element. The formula 2n² is used to determine the maximum number of electrons within a principal energy level (shell), and the formula 2(2l + 1) provides the maximum number of electrons within a specific subshell (l being the azimuthal quantum number for the subshell).