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Question

Which of the following is the correct match?
(a) Eka silicon - Ge
(b) Eka aluminum - Ga
(c) Eka manganese - Tc
(d) Eka boron - Sc

A
b, c
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B
a, b, d
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C
a, d
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D
All of above
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Solution

The correct option is D All of above
Eka is a prefix used to designate the first element of the same family in the periodic table beyond the one to whose name it is prefixed, as Eka manganese

(a) Eka silicon - Ge (germanium)

(b) Eka aluminium - Ga (gallium )

(c) Eka manganese - Tc (technetium)

(d) Eka boron – Sc (scandium)

Hence, the correct option is D

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