Which element replaced eka-silicon in the modern periodic table?

Phosphorus

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Carbon

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Germanium

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Aluminium

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Solution

The correct option is C Germanium
In 1871 Mendeleev predicted the existence of a yet-undiscovered elements and left gap for these in his periodic table. He named one of the element as eka-silicon because of its proximity with the properties of silicon. Later this gap was filled by germanium.

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Similar questions

Which element replaced eka-aluminium in the modern periodic table?

Mendeleev predicted the existence of certain elements not known at that time and named two of them as eka-aluminium, and eka-silicon.

(a) Name the element which has taken the place of (i) eka-aluminium and (ii) eka-silicon

(b) Mention the period/periods of these elements in the modern periodic table.

(d) Classify these elements as metals, non-metals or metalloids.

(e) How many valence electrons are present in the atoms of each of these elements?

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