Question: Who was the first chemist that tried to group elements based on their properties?
Disambiguated questions and answers: question: Who was the first chemist to start grouping elements based on their properties?
Who was the first chemist to start grouping elements by properties in a periodic table?
answer: Johann Wolfgang Döbereiner
Dmitri Mendeleev
Natural Questions answer: Johann Wolfgang Döbereiner (from the Wikipedia article "History of the periodic table")