At room temperature, liquid metal and liquid non-metals are :
At room temperature, Mercury (Hg) is the
metal. Also, Hydrogen (H) and Bromine (Br) are the nonmetals that exist in a liquid state at room temperature. Br is a diatomic molecule at room
temperature. It is a dense,
reddish-brown liquid evaporating at standard temperature and pressure and
giving an orange vapour. It is one of the only two elements in the periodic
table which are liquids at room temperature other than mercury.
Hence, the correct answer is option C.