Input interpretation
mendelevium | Aufbau diagram
Result
Build the ground-state orbital diagram for: mendelevium (Md) Plan: • Look up the abbreviated (condensed) ground electronic configuration. • Use the electronic configuration to identify the outermost electrons. • Determine the energetic ordering of atomic orbital subshells. • Use the following representations: a gray rectangle for an atomic orbital, an up arrow for an alpha (spin-up) spin state and a down arrow for a beta (spin-down) spin state. • Follow the Pauli exclusion principle by representing the first electron in each atomic orbital with an alpha spin state and the second electron with a beta spin state. • Place electrons into orbitals following the Aufbau principle and Hund's rule. The abbreviated ground electronic configuration for mendelevium is: [Rn]7s^25f^13 Electrons in atomic orbitals outside of the radon core, [Rn], are the outermost electrons: 7s^25f^13 Atomic orbital energy usually increases from 1s to 8s in the following order: Follow the Aufbau principle by filling the atomic orbitals with electrons in the following order: 7s < 5f Place two electrons as an alpha-beta pair into the 7s orbital: 7s Place thirteen electrons into the seven 5f orbitals with one alpha electron in each of the seven orbitals and one beta electron each in six of the orbitals: Answer: | | 5f 7s