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  1. Which of the following is in liquid form at room temperature?

  2. A.

     Lithium

    B.

     Sodium

    C.

     Francium

    D.

     Cerium

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    Answer : Option C

    Explanation :

    The only liquid elements at standard temperature and pressure are bromine (Br) and mercury (Hg). Although, elements caesium (Cs), rubidium (Rb), Francium (Fr) and Gallium (Ga) become liquid at or just above room temperature.


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