MCQ
In Mendele′ ev ’s Periodic Table, gaps were left for the elements to be discovered later. Which of the following elements found a place in the perioidc table later:
- ✓Germanium.
- BChlorine.
- COxygen.
- DSilicon.
✓
Answer
Correct option: A.
Germanium.
Mandeleev named the undiscovered elements as Eka-boron, Eka-aluminium and Eka-silicon. These were replaced with scandium, gallium and germanium respectively in due course of time.
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