Scenario: The prefix eka - comes from the Sanskrit word for one. Mendeleevused t

Question

Scenario:
The prefix eka - comes from the Sanskrit word for one. Mendeleevused this prefix to indicate that the unknown element was one placeaway from the known element that followed the prefix. For example,eka-silicon, which we now call germanium, is one elementbelow silicon. Mendeleev also predicted the existence ofeka-manganese, which was not experimentally confirmeduntil 1937 because this element is radioactive and does not occurin nature.
Question:
Based on the periodic table, what do we now call the elementMendeleev called eka-manganese?

Explanation / Answer

eka managanese is technetium in modern periodic table; its atomic number s 43 and symbol is Tc. its just below the manganese in periodic table so is calledeka manganese.

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