Question

why is mercury used in thermometer​

Answer 1

$\huge\bf\blue{Hey\:Mate!!!}$

Mercyry is used in thermometer as it is in liquid state in room temperature.

Moreover, it is highly sensible to temperature.

@ItsMysteriousGirl✒️

Answer 2

Answer:

Mercury is used in thermometer because it has high coefficient of expansion and it is only the state which is liquid at room temperature and becomes small balls when thermometer is broken