Question

Which liquid has the highest density?

Answer 1

Hint:It is completely a factual type question to answer we should know the physical state of the elements in the standard temperature. It is the metal which exists as liquid at room temperature.

Complete step-by-step answer:So in the question it is asked which liquid will have the highest density. Density means the amount of mass per unit volume of the substance. The density of a substance cannot be calculated as such, first mass has to be calculated then the volume value and then only we will get the density value.
And the question is completely factual type question to answer the question we should know about the physical state and the density of a substance.
We consider those elements which will be liquid in standard temperature and pressure and which have higher value of density.
So in that the liquid which has the highest density is mercury.
It is the only metal which exists as liquid in room temperature other metals are hard and rigid and exist in solid phase.
It has a density of about 13.546 grams per cubic centimeter.

Additional information:
 Mercury is the element which has the atomic number 80. It appears as a very silvery substance similar to silver metal itself. And is represented by the Hg which came from its Latin name Hydrargyrum which has a meaning of liquid silver. It has a total of 34 isotopes in which 6 of the isotopes are very stable.

Note:Mercury finds application in devices like thermometer, barometer, batteries, because having the property of conducting materials. Mercury is a very toxic substance, breathing its vapors will cause brain and kidney problems. If the mercury comes in contact with gold it completely discolors the gold ornaments.