Q. First classification of elements based on

A
Metals and Non metals
B
Metals, Metalloids and Non metals
C
Metalloids and Non metals
D
Metals and Metalloids
Solution:
  • Lavoisier is most noted for his discovery of the role oxygen plays in combustion.
  • He recognized and named oxygen (1778) and hydrogen (1783), and opposed the phlogiston theory.
  • Lavoisier helped construct the metric system, wrote the first extensive list of elements, and helped to reform chemical nomenclature.
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