What is the contribution of cannizzaro?

Answer 1

Stanislao Cannizzaro was an influential Italian chemist known for his significant contributions to the field of chemistry in the mid-19th century. He is best remembered for his work on the determination of atomic weights, particularly through his development of the Cannizzaro reaction, which helped clarify the distinction between molecular and empirical formulas. His 1850 paper presented a clear method for calculating atomic weights, which greatly aided in the acceptance of Avogadro's hypothesis and the establishment of modern atomic theory. Cannizzaro’s efforts helped lay the groundwork for the systematic study of chemical compounds and their properties.