It can't.
If you're talking about the red liquid in some thermometers ... that's not Mercury, that's probably alcohol with a little red dye added.
If you're talking about mercury compounds like cinnabar, that's just the way the electronic structure works out. It's too complicated to explain in a couple of paragraphs. Take a senior-level college course in advanced inorganic chemistry and you might begin to understand this.
If you're talking about the urban legend of the explosive "red mercury", it doesn't actually exist.
Mercury is traditionally used in thermometers to measure temperature due to its high thermal expansion and conductivity properties. However, due to its toxic nature, many countries have shifted to safer alternatives such as alcohol or digital thermometers.
Liquid mercury is silver in color, not red. While some compounds of mercury can appear reddish in color, pure elemental mercury does not change into the color red by itself.
To color silver mercury red, you can chemically modify it by reacting it with a compound that forms a red complex. For example, you can react mercury with iodine to form mercury (II) iodide, which is red in color. However, please note that handling mercury and its compounds can be hazardous, so it is important to take proper safety precautions and work in a well-ventilated area.
Red mercury is not a real substance and does not exist. It is a hoax or urban legend that has been perpetuated for many years. Mercury itself is a silver-colored liquid metal that cannot be transformed into red mercury through any known means.
Some times red coloured liquid is used but mostly gray coloured liquid is used.
It's the red thing in thermometers. [wrong I'm sorry.] the red thread in a thermometer is coloured alcohol. If the thread is mercury, then it will be silver-coloured.
Mercury is a silver coloured substance.
At room temperature, mercury is silver-coloured, metallic and liquid.
Mercury is traditionally used in thermometers to measure temperature due to its high thermal expansion and conductivity properties. However, due to its toxic nature, many countries have shifted to safer alternatives such as alcohol or digital thermometers.
Liquid mercury is silver in color, not red. While some compounds of mercury can appear reddish in color, pure elemental mercury does not change into the color red by itself.
To color silver mercury red, you can chemically modify it by reacting it with a compound that forms a red complex. For example, you can react mercury with iodine to form mercury (II) iodide, which is red in color. However, please note that handling mercury and its compounds can be hazardous, so it is important to take proper safety precautions and work in a well-ventilated area.
Most are Silver or Black or Red. I have a White car. UNUSUAL!!!
the color of mercury is gray it has no color
Mercury is a silver-white to dim substance. In the event that your thermometer is loaded up with a red fluid, your thermometer contains red colored liquor or mineral spirits and not mercury.
Red mercury is not a real substance and does not exist. It is a hoax or urban legend that has been perpetuated for many years. Mercury itself is a silver-colored liquid metal that cannot be transformed into red mercury through any known means.
The planet Mercury is grey, similar in colour and general appearance to our moon. Red Mercury is a chemical made of Iodine and Mercury. It was used as a medicine a long time ago before people realised it was actually poisonous. It is either in the form Mercury(I) iodide or Mercury(II) iodide.
The red stuff in most thermometers is alcohol. The silver stuff is Mercury.