In the following pair of d-block elements, the first member is a liquid at room temperature and the second member is mostly available in the earths crust. The pair is:
A
Hg, Fe
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B
Hg, Tc
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C
Hg, Zn
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D
Hg, Au
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Solution
The correct option is A Hg, Fe Mercury (Hg) is a liquid at room temperature. Iron is mostly available in the earth's crust.