In Mendeleev’s Periodic Table, gaps were left for the elements to be discovered later. Which of the following elements found a place in the periodic table later ?
A. Germanium
B. Chlorine
C. Oxygen
D. Silicon.
Answer:A
In Mendeleev’s Periodic Table, gaps were left for the elements to be discovered later. Which of the following elements found a place in the periodic table later ?
A. Germanium B. Chlorine C. Oxygen D. Silicon.