Russian chemist Dmitri Mendeleev in 1869 devised

Q. Russian chemist Dmitri Mendeleev in 1869 devised
A. The periodic Table
B. Force of gravity
C. Law of thermodynamic
D. structure of electron
Answer: The periodic Table

A. The periodic Table
B. Force of gravity
C. Law of thermodynamic
D. structure of electron
Answer: The periodic Table