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Q.

The element 'Sc' is known long back as

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a

Eka-mercury

b

Eka-aluminum

c

Eka-silicon

d

Eka-boron

answer is B.

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Detailed Solution

Scandium is also known as “Eka boron” because it has similar properties as like as Boron but it was not discovered by in Mendeleev’s time.

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