Mercury can evaporate at room temperature. Mercury vapor and its compounds are often highly toxic (chronic).
It is the only metal that exists in liquid form at normal temperature and pressure. Melting point
-
38.87℃, boiling point
356.6℃, density
13.59
g
/
Cubic centimeters. It has strong cohesion and is stable in the air. At room temperature, it evaporates mercury vapor, which is highly toxic. day
Natural mercury is a mixture of the seven isotopes of mercury. Mercury is slightly soluble in water, and its solubility increases in the presence of air. Mercury in nature
Mercury is widely present in the world. Trace amounts of mercury are found in most animals and plants. Therefore, there are trace amounts of mercury in our food.
It can be metabolized through excretion, hair growth, etc.
Alloys: Mercury readily forms alloys with most common metals, and these alloys are collectively referred to as mercury alloys
(
Or amalgam
)
. It can react with mercury
The metals that form alloys include gold and silver, but not iron, so iron powder has long been used to displace mercury. Some other firsts
Transition metals are difficult to form alloys, but manganese, copper and zinc are not included. Other elements that are not easily alloyed with mercury include platinum and
Some other metals. Sodium amalgam is a commonly used reducing agent in organic synthesis and is also used in high-pressure sodium lamps. When mercury and aluminium are pure
When metals come into contact, they tend to form amalgam of aluminum because amalgam of aluminum can destroy the oxide layer that prevents further oxidation of metallic aluminum
(
Brush experiment
)
So even a very small amount of mercury can seriously corrode metallic aluminum. For this reason, in the vast majority of cases,
Mercury cannot be carried on planes because it can easily form alloys with exposed aluminum components on the aircraft, posing a danger.
Liquid: Mercury, as a metal, strangely exists in a liquid state at normal temperature. The relativistic contraction effect theory can do this
Unusual phenomena provide explanations. Like gold, of mercury 6s The contraction of the orbit while it tends to stabilize has led to a kind of
It is called the “inert electron pair” effect: of mercury 6s2 The shell layer shows inertness during the bonding process. Mercury can be seen 6s26p The excitation energy far exceeds the corresponding excitation energies of cadmium and zinc. According to the general periodic law, the energy interval should decrease as the number of principal quanta increases
Post time: Aug-07-2025