For science it s usually considered to be either 20 c or 25 c.
Non metal exists in liquid at room temperature.
Name a non metal which exists as a liquid at room temperature.
Metals and non metals class 8 mcqs questions with answers.
The most well known is mercury hg which is molten above 38 8 c 234 3 k 37 9 f.
Others include caesium cs which has a melting point of 28 5 c 83 3 f rubidium rb 39 c 102 f francium fr estimated at 8 0 c 46.
It has one of the longest liquid ranges of any metal and has a low vapour pressure even at high temperatures.
Non metals are usually poor conductors of heat and electricity.
Room temperature is a loosely defined term that can mean anywhere from 20 c to 29 c.
This makes possible its use in high temperature thermometers.
Which of the following is a liquid at room temperature.
Choose the correct option in the following questions.
Mercury is the only metal which is in liquid state at room temperature.
Non metals liquid at room temperature bromine br.
A few elemental metals are liquid at or near room temperature.
At this temperature and ordinary pressure only two elements are liquids.
Mercury symbol is hg and atomic number 80.
They are non lustrous non sonorous non malleable and are colour.
Gallium 31ga is the only metal except for mercury caesium and rubidium which can be liquid near room temperatures.
Metals that are liquids at room temperature are mercury hg and gallium ga.
However other elements such as caesium cs rubidium rb and francium fr also become liquids at a few degrees above room temperature.
Hg symbol comes from hydrargyrum a latinized form of the greek word hydrargyros which is a compound word meaning water silver as it is commonly known as quicksilver.