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