Question

In Mendeleev's PeriodicTable, gaps were
left for the elements to be dis coverd later. which of the following elements found a place in the Periodic. Table later ( )
a. Chlorine
b. Silicon
c. Oxygen
d. Germanium
PLZ SAY ONLY CORRECT OPTION PLZ SAY FAST URGENT ​

Answer 1

Explanation:

CHLORINE, SILICON , OXYGEN WERE ALREADY IN THE PERIODIC TABLE

GERMANIUM WAS DISCOVERED LATER

SO THE ANSWER IS (d)

Answer 2

Germanium was discovered later.

Extra point: Scandium and Gallium were also discovered later and Medeleev left space in his periodic table for each of them.