☆ Mandeleev predicted several new elements that were to be discovered in the future like " Eka-Silicon ".
→ For what purpose "Eka" stands here?
→ Eka Silicon was further named as "Germanium" , then why was it called eka silicon?
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Mendeleev name unnamed elements as EKA- Boron EKA- Aluminium and EKA Silicon which were later replaced as Scandium, Gallium, and germanium respectively.
Eka boron – It is The element Scandium.
Eka aluminum is the element Gallium.
Eka silicon – It is the element Germanium.
eka meaning “beyond” .
When Mendeleev proposed his table , he noted gaps within the table and predicted that unknown elements existed with properties appropriate to fill those gaps.
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(a) Eka-silicon was replaced by Germanium and Eka-aluminium was replaced by Gallium.
(b) Gallium: Group 13 Period 5
Germanium: Group 14 period S
(c) Gallium is metal, while Germanium is metalloid
(d) Gallium has 3 valence electrons, while Germanium has 4.
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