Question

which two chemists organized elements based on properties such as how the elements react or whether they are solid or liquid?
lavoisier and mendeleev
döbereiner and newlands
newlands and mendeleev
lavoisier and döbereiner

Explanation:

Döbereiner grouped elements into triads based on properties. Newlands arranged elements in order of increasing atomic mass and noticed a periodicity in properties. Lavoisier is known for naming oxygen and hydrogen and for his work on combustion. Mendeleev is famous for creating the modern - periodic table. Döbereiner and Newlands were the ones who organized elements based on properties like reactivity and physical state early on.

Answer:

B. Döbereiner and Newlands