Question 1 • AZ-Chemistry A-CR
The scientists’ contributions came in this order: Lavoisier’s early classification of elements in 1789, Döbereiner’s triads around 1829, Newlands’s law of octaves in the 1860s, Mendeleev’s periodic table in 1869, and Moseley’s atomic-number arrangement in the early 1900s. Therefore, the correct choice is “Lavoisier, Dobereiner, Newlands, Mendeleev, and Moseley.”
AI-written and checked against the verified answer.