Mendeleev predicted the existence of which element/elements in the periodic table?

Germanium and Gold

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Gallium and germanium

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Sodium and germanium

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Gallium

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Solution

The correct option is B
Gallium and germanium

Mendeleev predicted the existence of gallium and germanium.

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Similar questions

Mendeleev predicted the existence of few undiscovered elements based on his periodic table.

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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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