What are the most active metals and what are the active metals

I'm right in the happy baby.

Ka, happy baby, I got it right.

If you don't count the radioactive elements, it's cesium, and if you count the radioactive elements, it's francium, hoping to help the landlord.

It's potassium, hope it works for you!

Lively metals have:1. Potassium is a symbol, an element symbol.

k, corresponding ion: k+

2. Calcium, element symbol: Ca, corresponding ions: Ca2+3, sodium, element symbol: Na, corresponding ions: Na+

4. Magnesium, element symbol: mg, corresponding ion: mg2+5, aluminum, element symbol:

Al, corresponding ions: Al3+6, zinc, element symbol: radical zn, corresponding ions:

Zn2+7, iron, element symbol: Fe, corresponding ion: Fe2+8, tin, element symbol:

SN, corresponding ions: SN2+9, lead, element symbol: PB, corresponding ions:

pb2+<>

10. Copper, element symbol: cu, corresponding ion: Cu2+11, mercury, element symbol:

hg, for the corresponding ions: hg22+12, silver, element symbol: ag, corresponding ions:

AG+13, platinum, element symbol: pt, corresponding ions: pt2+14, gold, element symbol:

Au, corresponding ion: Au3+

Active metals include potassium, calcium, sodium, magnesium, aluminum, zinc, iron, tin, lead [hydrogen], copper, mercury, silver, platinum, and gold.

Basis: The determination of metal activity is to see whether the metal can replace another metal from its salt solution, that is, through the replacement reaction to make the metal elements in the salt become elemental, if the metal can replace the metal elements in the salt solution, then the metal is an active metal. Conversely, it is not an inert metal (inactive metal).

Chemists rank the liveliness of metals on four grounds:

with the degree of intensity of the reaction with oxygen. The degree of intensity with which the acid reacts. Whether the metal can displace other metals from the solution of its compounds. Whether it can replace hydrochloric acid, hydrogen in dilute sulfuric acid.

The more reactive metal itself is prone to oxidation with volatile electrons, and it has a lower electric potential. The most reactive group of metallic elements: alkali metals (group 1a except h), the most reactive metallic elements:

The most reactive metallic elements that can exist stably in francium are the most reactive non-metallic element group of CS: the most reactive non-metallic element of the halogen group (V11A group).

Through a large number of experiments, scientists have developed a sequence of metal activity: potassium, calcium, sodium, magnesium, aluminum, zinc, iron, tin, lead [hydrogen], copper, mercury, silver, platinum; The metal in front of the hydrogen next to the rock is the active metal, and the back is the inert metal (that is, the inactive metal).

Who is the most reactive metal

In the periodic table, the metals of the first main group are the most reactive. These metals include lithium, sodium, potassium, rubidium, cesium, francium. Theoretically, the most reactive metal should be francium, but due to the instability of the francium nucleus, the half-life of francium-223 is only 21 minutes at most, and the trace amount of metal francium can no longer be studied experimentally.

At the same time, the preparation technology of cesium metal has been very mature, and cesium has become the most active metal in the true sense.

Cesium metal is golden yellow, has a very low melting point, is the softest metal, is easily oxidized in the air, and can react violently with water to produce hydrogen and **. Cesium does not have an elemental (pure metal) form in nature, and very small amounts of cesium salts are distributed on land and in the sea.

Uses of cesium

An alloy of cesium, often used to make precision optical instruments, the radionuclide CS-137 is one of the radioactive contamination that leaked from the Fukushima Daiichi nuclear power plant in Japan.

The atomic clock made of cesium can accurately measure a moment of one billionth of a second, and it has been traveling continuously for 300,000 years, and the error is not more than 1s, which is quite accurate. Internationally, "one second" is the time it takes for cesium atoms to "vibrate" 9192631770 times.

The discovery of cesium

In 1860, two German scientists discovered the element cesium, and they produced about 7 grams of cesium chloride, but failed to produce the metal cesium. The first to successfully produce cesium metal was Kaul Brown of the University of Bonn. Professor Carl Theodor Setterberg, who obtained it from electrolytically molten cesium cyanide (CSCN).

Reactive metals are metals that react with water or acids at room temperature to produce hydrogen. Common reactive metals are as follows:

1.Sodium (Na): Sodium is a silvery-white metal, extremely reactive at room temperature, and reacts with water to burn violently and produce hydrogen.

2.Potassium (K): Potassium is also a silvery-white metal that reacts with water to burn violently and produce hydrogen.

3.Lithium (Li): Lithium is a silvery-white metal that reacts slightly slower with water than sodium and potassium, but still produces hydrogen.

4.Cesium (CS): Cesium is a silvery-white metal that reacts violently with water, and can even crack quickly to cause **.

5.Rubidium (RB): Rubidium is a silvery-white metal that reacts violently with water to produce hydrogen.

These reactive metals are commonly used in laboratories and industries to prepare hydrogen or other chemical reactions. However, due to their strong reaction with water or acid, they have high reactivity, so they need to be used with care in daily life.

Reactive metals are metals that are highly active in chemical reactions, and usually they will quickly lose electrons, produce ions, or electron transfer when they react with non-metals. Here are some common reactive metals:

1.Potassium (k).

2.Sodium (Na).

3.Lithium (Li).

4.Calcium (CA).

5.Magnesium (mg).

6.Aluminum (AL).

7.Zinc (Zn).

8.Iron (Fe).

9.Tin (sn).

10.Lead (Pb).

These genera are active in chemical reactions, easily react with other substances, and can react with many non-metallic elements and compounds at room temperature. They are often used in industry and laboratories as reducing agents, alloys, batteries, etc. It is important to note that due to the chemical nature of reactive metals, they may react violently when they come into contact with water or acids, or emit hydrogen, etc.

Some common reactive metals include:

1.Lithium (Li) Qingbi fiber.

2.Sodium (Na).

3.Potassium (k).

4.Rubidium (RB).

5.Caesium (CS).

6.Calcium (CA).

7.Strontium (Sr).

8.Barium (BA) is imitated.

These metals can easily lose electrons in chemical reactions, form cations, and react with other elements. They usually have a lower ionization energy and a higher reductivity.

Active metals include potassium, calcium, sodium, magnesium, aluminum, zinc, iron, tin, lead [hydrogen], copper, mercury, silver, platinum, and gold.

Common active metals are: potassium, calcium, sodium, magnesium, aluminum, zinc, iron, tin, lead.

Potassium, calcium, sodium, magnesium, aluminum, zinc, iron, tin, lead, copper, mercury, silver, platinum.

Such as gold, silver, platinum, mercury.

The determination of metal activity is to see whether the metal can replace the hydrogen element in the hydride, that is, to make the hydrogen element into elemental hydrogen through the replacement reaction.

If a metal can replace the hydrogen in the hydride, the metal is first determined to be active, and then the order of the active metals is determined according to the acidity of the hydride that can react with the metal.

Some metal uses

Metal elements are the main body of chemical elements and are the main material resources for people's production and life.

Tungsten (W): Among the various metal elements, tungsten is the most difficult to melt and the most difficult to volatilize. Tungsten is mainly used in the manufacture of alloy steel; Pure tungsten is mainly used in the manufacture of tungsten wire in lamps, and is also used in electronic instruments, optical instruments, etc.

Chromium (CR): Chromium is a silvery-white cracked metal with extremely high hardness and corrosion resistance, and is used in electroplating and manufacturing special steels. In this century, when people were working on the hard and unbridled nature of chromium, it inadvertently cracked and showed its corrosion resistance, thus giving birth to stainless steel.

Now, stainless steel and chrome-plated products have been widely used in medical equipment, drinking utensils, tableware and other fields.

Manganese (MN): Pure manganese is hard and brittle, and it is difficult to be applied in production and life, but the alloy of manganese has a wide range of uses. Manganese steel is both hard and tough, making it an ideal material for making rails, bearings, and armor plates.

Lithium (Li): Lithium is the lightest metal element with the largest specific heat. Lithium is not only used in the manufacture of ultra-light alloys and lithium batteries, but is also an important material for cutting-edge technologies.

Lithium alloy can greatly reduce weight and energy consumption in the aerospace industry, and plays an important role in the atomic energy industry. In the metallurgical industry, lithium is often used as a deoxidizer and degasser to eliminate porosity and bubbles in metal castings.

Titanium (Ti): The specific strength (ratio of strength to specific gravity) of titanium is the highest of all metallic elements. Titanium and titanium alloys are new structural materials, hard and light, mainly used in the manufacture of aircraft, submarines, corrosion-resistant chemical equipment and various mechanical parts.

Titanium alloys maintain high strength in temperatures ranging from -253 to 500°C, making them ideal aerospace materials. In steelmaking, a small amount of titanium is also a good deoxidation, nitrogen removal and desulfurization agent.

The most metallic activity is potassium.

The common metal activity order is k, ca, na, mg, al, zn, fe, sn, pb, h, cu, hg, ag, pt, au; In the order of metal activity, the higher the position of the metal, the stronger the activity of the metal, and among the four metals of zinc, iron, copper and silver, zinc is the highest and has the strongest metal activity.

The activity of the metal reflects the tendency of the metal to form hydrated ions in the aqueous solution, that is, it reflects the difficulty of the oxidation reaction of the metal in the aqueous solution, which is based on the standard electrode potential of the metal. The metal activity sequence table is made of metals according to the strength of metal activity.

Metal:

Metals generally refer to substances that have a characteristic luster (i.e., a strong reflection of visible light), opacity, malleability, and thermal conductivity. The narrow concept of metal is the elemental substance composed of metallic elements. Pure metals are generally solid (except for mercury) at room temperature, and most of them are excellent conductors of electricity and heat, with higher density and higher melting points.

The earth's metal resources are widely found in the earth's crust and oceans, except for a few very inactive metals such as gold and silver, which exist in elemental forms, the rest exist in the form of chemical compounds.

Metals are widely present in nature, and are widely used in life, and are a very important and most widely used substance in modern industry.

The most reactive group of metal elements: alkali metals (group 1a except H), the most reactive metal element: francium can stably exist in dust The most clumpy and active metal element is the most active group of non-metallic elements in CS: halogen group (group V11a).

The most reactive non-metallic element: fluorine.

Least active elemental group: Noble gas (group 0).

The least permeable element: helium.