O Princípio de Exclusão de Pauli e a tabela periódica: uma análise na coleção dos livros didáticos PNLD 2018

Abstract

The Pauli Exclusion Principle says that "there cannot exist in an atom two electrons with the same quantum numbers". Although it seems simple, this principle is one of the most fundamental in quantum physics, being a key part for the understanding of phenomena such as paramagnetism and ferromagnetism and also for the under-standing of the electronic distribution of the elements. Knowing this, the presence of this subject in textbooks is quite relevant, since the electronic configuration of the elements explains the periodic properties and consequently the structure of the peri-odic table. Furthermore, a modern explanation for the construction of the periodic table can contribute to solving the problems related to the decontextualized ap-proaches offered by numerous textbooks. Taking this into account, the work aimed to analyze how the textbooks in the PNLD 2018 collection of chemistry for high school address the Pauli Exclusion Principle. For that, the six books of the PNLD 2018 col-lection were selected, plus one book from a previous collection, in order to know how these literatures approach the subject of the Exclusion Principle from a case study perspective. Only two of the six books presented the Exclusion Principle in their structure, not establishing a direct relationship between the subject and the periodic table. Therefore, it is necessary to develop didactic proposals involving this principle and the elaboration of works contemplating the Pauli Principle in the teaching of chemistry.