Q.

Which one of the following elements exists in the liquid state at room temperature?


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a

Mercury

b

Lead

c

Sodium

d

Calcium 

answer is A.

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Detailed Solution

Mercury (Hg) is an element that exists in the liquid state at room temperature.
When mercury is at room temperature, it is liquid. Although not a nonmetal, bromine (Br) also exists as a liquid at ambient temperature. Rubidium, Caesium, and Gallium are a few other metals that exist as liquids at temperatures just above absolute zero.
 
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