@article{orofino_machado_faria_2013,  title={The use of Rich and Suter diagrams to explain the electron configurations of transition elements},  volume={36},  ISSN={0100-4042},  url={https://doi.org/10.1590/S0100-40422013000600027},  DOI={10.1590/S0100-40422013000600027},  number={6},  journal={Química Nova},  publisher={Sociedade Brasileira de Química},  author={Orofino, Hugo and Machado, Sergio P. and Faria, Roberto B.},  year={2013},  pages={894–896} }