Mercury is a chemical element with the atomic number 80 and the symbol Hg. It is a heavy metal that is very reactive and can cause serious health problems if it gets into your body. The only way to be sure that you do not eat any dangerous mercury is by using a food guide that does not include fish or seafood in its recommendations.
In fact, eating too much fish is also harmful because it contains high levels of mercury. If you are pregnant or thinking about becoming pregnant, don't eat more than 12 ounces of fish per week because of the risk of harming your baby if you are already eating during pregnancy.
The most common form of mercury is elemental mercury. Elemental mercury is found in certain products such as thermometers, barometers, and glow sticks. When this form of mercury comes in contact with water, it will always dissolve first and become available for absorption by living organisms. Other forms of mercury are used in medicine and science but they are less common today. These other forms include liquid mercury, mercurous chloride, and mercuric chloride. Liquid mercury is found in small amounts in some vaccines and is not toxic if it gets into your body but it can't be absorbed through the skin or inhaled.
Mercury is a chemical element with the atomic number 80 and the symbol Hg. The ingredient mercurial (element)
|Discovery||Ancient Egyptians (before 1500 BCE)|
|Main isotopes of mercury|
Mercury (Hg), popularly known as quicksilver, is a chemical element and a liquid metal in Periodic Group 12 (IIb, or zinc group). It is the most reactive of all elements other than hydrogen and helium. In fact, mercury is so reactive that it is almost never found in its elemental form but always in compounds.
The standard atomic weight of mercury is 200.90. Its atomic number is 80. It has a metallic color and a soft texture when fresh out of the furnace. Mercury can be melted at temperatures lower than any other element except for alkali metals and has the lowest melting point of any common substance at -38.2°C. At ambient conditions, mercury will solidify at about 15°C. Mercury's vapor pressure increases with temperature; at room temperature, it is less than one percent that at atmospheric pressure.
It is a p-type semiconductor, although it is also used as an electrode on the opposite side of this type of device. The resistance of pure mercury drops rapidly when cold, reaching a minimum of 4.9 megohms per square at 77 K. This causes problems for electronic devices which rely on resistors to control their power supplies. Heating mercury above 30 °C reduces its conductivity by several orders of magnitude.
Mercury (Hg) is a naturally occurring metal that is mostly found in the mineral cinnabar, which may contain up to 86 percent mercury. Mercury is released naturally as a result of rock weathering and (or) volcanic activity.... Also, fish consume other organisms with absorbed mercury they have eaten or sprayed into the air when flying away from danger. Fish are then able to pass this mercury on to humans who eat them.
It has the potential to be exceedingly harmful to humans. Mercury's symbol Hg is derived from its Greek name, hydrargyrum, which means "liquid silver" in reference to its gleaming surface. Because of its speed, the element is sometimes known as "quicksilver." Mercury is a highly poisonous element. It is absorbed through the skin and enters the body through the bloodstream and lymph system. It can also be ingested through eating fish that have eaten mercury-contaminated algae or soil. There, it will slowly enter the human body over time.
Because of its ability to harm humans, most mercury used in industry is removed from the gas or liquid form and converted into a solid before being released into the environment. This usually involves mixing mercury with limestone (calcium carbonate) and heatings temperatures up to 500 degrees Celsius (932 degrees Fahrenheit). The result is a powder called "mercury oxide" that cannot revert back into a liquid state.
Mercury has no stable isotopes. This means that there are no forms of mercury that contain more or less mass than others. Any variation in mass is due to changes in the number of neutrons in the nucleus of an atom. For example, elemental mercury has 0 neutrons and atomic mercury has 80 neutrons. All forms of mercury are extremely toxic to humans. Even in very small amounts, it can cause brain damage, organ failure, and death.
According to the periodic table, Hg has an atomic number of 80 while Tin has an atomic number of 50. An atomic number is the number of protons in a neutral atom, which is also the number of electrons. As a result, mercury has more protons and electrons. Electrons are the particles that orbit around nuclei, which means that mercury has more electrons than tin.
However, because mercury is a metal, while tin is a non-metal, they cannot be easily converted into each other. This would require them to exchange electrons which is not possible. Therefore, although mercury has more electrons than tin, it still has more protons than electrons.
In conclusion, mercury has more electrons than tin.
There aren't many mercury (I) or mercurous compounds. Hg22+ is a diatomic and stable ion of mercury (I). HgO, or mercury (II) oxide, offers elemental mercury for the synthesis of numerous organic mercury compounds and some inorganic mercury salts. The term "mercury (I)" is usually used when referring to inorganic compounds while "mercury (II)" is applied to organic compounds.
Mercury (I) compounds are mainly black, metallic-looking substances that are not soluble in water but can be dissolved by alcohol or acetone. They are resistant to heat and most chemicals. The metal can be reclaimed from waste products by electroplating.
Some common mercury (I) compounds include mercury(l) chloride, mercury(l) fluoride, and mercury(l) oxide. Less common compounds include mercury(l) carbonate, mercury(l) cyanide, mercury(l) iodide, mercury(l) sulfide, and mercury(l) telluride.
Waste products containing mercury (I) should be handled properly to prevent contamination of soil and groundwater.
Mercury (II) compounds are mostly white or off-white powders that are soluble in water. They are volatile and toxic if inhaled.
Mercury is one of the seven alchemical metals (gold, silver, mercury, copper, lead, iron, tin). In astrology, the symbol for mercury might also be used to symbolize the planet of the same name. A serpent or snake is frequently used to represent metal. When the metal is gold, it is usually represented by an image of a golden bird. For silver, an image of a fox is commonly used. For other metals, images vary depending on what aspect of alchemy is being discussed.
In folklore, mercury was known as "the metal that melts at room temperature". It was also believed to have magical properties, such as the ability to bring about communication with the dead. These attributes led to it being used in various rituals, especially by priests and monks of ancient Greece and Rome. Today, mercury is used in a variety of technologies, most notably thermometers and fluorescent lights.
Alchemists used mercury because of its ability to dissolve materials other metals would not, such as silver and gold. They also used it because it was easily bought and sold at the time. Other metals needed for alchemy could only be obtained by trading with other scientists and merchants.
It is important to note that all versions of alchemy contain some degree of fraud. Some alchemists would substitute one material for another, others would add false ingredients to their recipes.