Question

Write
down the Achievement of mandeelev
Periodic.​

Answer 1

Answer:

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He had predicted their chemical properties based on elements present in the same group as well. Later on, his predictions were found to be correct. Example: He predicted the existence of elements such as Scandium, Gallium and Germanium and named them Eka-boron, Eka-Aluminium and Eka-Silicon respectively.

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Answer 2

He had predicted their chemical properties based on elements present in the same group as well. Later on, his predictions were found to be correct. Example: He predicted the existence of elements such as Scandium, Gallium and Germanium and named them Eka-boron, Eka-Aluminium and Eka-Silicon respectively.

• element with a slightly greater atomic mass were placed. ...

• He left some gaps in the Periodic Table with the prediction of. ...

• He named the future elements by prefixing a Sanskrit numeral, Eka (one) to the name of preceding element in the same group.