Is it not the lively metal that was discovered first and why

Among the common metals, the less active the metal element, the more people found it first, because the activity is poor, and the element is easy to exist in nature, so it is the first to be discovered.

For example, prehistoric people recognized the existence of gold element, and silver was also recognized by people very early.

HG was also recognized early on, as mercury was easily obtained by heating dansa ore.

Copper was discovered around the time of HG (during the Sumerian civilization, around the Xia Dynasty in China), when it was discovered that some of the copper ores that were ubiquitous on Earth, such as limestone or malachite and charcoal, could be smelted by heating more than 1,000 copper ores.

Iron was discovered much later, around the Warring States period in China, because iron was reactive, so the smelting conditions were high (high temperature, high conditions).

Of course, there are exceptions, such as the fact that aluminium is inferior to alkali and alkaline earth metals, but it was discovered later than they did (although it was slightly earlier that the element may have been recognized), because bauxite has a high melting point and is almost difficult to melt. Whereas, the salts of alkali metals and alkaline earth metals are easy to melt and can be obtained by electrolysis, which was discovered by the great British chemist David. Subsequently, sodium was used as a reducing agent to reduce the elemental aluminium (electrolysis was a later thing).

There are also metals, such as platinum, that were discovered late because they are extremely rare, although they are not too high in the active type.

Radioactive elements are even later.

The more active it is, the more difficult it is to make, such as NA room temperature and water reaction.

So the weaker the liveliness, the more it will be detected first (as if it is cu).

The more reactive the metallicity and the reduction property, the stronger or weaker the reactive it is.

It should be described by "nature" + "liveliness".

For example, for metal elements, the lower down the same main group, the stronger the "metallicity (reducibility)", the more "lively" the metal;

For non-metallic elements, the lower the same main family, the weaker the "non-metallic (oxidizing)", the more "inactive" the non-metallic He Hong.

There are some twisters, but it's easier than memorization, and there's an easy way to do it, which is to memorize:

The most active non-metal, the most oxidizing. (Inert gas.)

That column doesn't count).

The most reactive metal, the most reducible.

Keeping these two points in mind, it is easy to compare the oxidation and reduction of elements of different periods (vertical) and different (horizontal) groups of the same period.

1. It doesn't make sense to say this sentence alone.

2. Other words and phrases should be connected, such as: metal activity order table.

The more the metal is in front, the stronger the metallicity and chemical properties.

The livelier. 3. It can also be said that the periodic table.

halogen elements.

The higher it is, the more reactive the chemistry becomes, and so on.

4.The so-called non-metallicity is the ability of the atoms of an element to obtain electrons, so the comparison of the liveliness of the atoms of non-metallic elements is their non-metallic properties. That is, it is correct to say that the more non-metallic the atom of a non-metallic element, the more reactive its chemical properties are.

However, it is not suitable for elemental elements formed by non-metallic elements.

or the properties of the compound.

Metallicity has two meanings, and in junior high school chemistry, metallicity is the liveliness of metal. Therefore, the more active the metal, the stronger its metallicity must be.

In high school chemistry, metallicity also means reduction, that is, a property opposite to oxidation. It doesn't matter if it's metal or not, not here.

The more reactive the metal, the more basic the hydration of its corresponding oxide.

Metallicity is the ability of a metallic element to lose electrons in a chemical reaction. The stronger the electron-losing particle, the more metallic the element belongs; The stronger the metallicity of an element, the less electronegativity it has and the weaker its ability to attract outermost electrons.

In the hydrate of its most abundant oxide, the weaker the bond formed with the oxygen atom, the easier it is to break under the action of water molecules to form metal cations and hydroxide ions, and the stronger the alkali first argument.

1. The most reactive metal element is cesium.

2. Metal cesium is a kind of golden yellow, low melting point of active metal closed liquid, in the air is easy to be oxidized, can react violently with water to produce hydrogen and **. Cesium has no elemental form in nature, and the element of cesesium is rarely distributed in the form of salt on land and in the sea.

3. Cesium is also an important material for the manufacture of vacuum parts, photocells, etc. The radionuclide CS-137 is one of the radioactive contamination that leaked from the Fukushima Daiichi Nuclear Power Plant in Japan.

4. Cesium is the most metallic of known elements (including radioactive elements) (note that it is not metal activity, the most active is lithium).

Different metallicity is the activity of the metal, the ability to lose electrons in most cases, generally speaking, the stronger the alkali corresponding to the strong metal, and the activity of the metal is the ability to lose electrons in aqueous solution. For example, sodium is more metallic than calcium, but metal activity is secondary to calcium. Sodium hydroxide is significantly stronger than calcium hydroxide.

The following metals are listed in order of activity from strongest to weakest: Na, K, Rb, Cs, Mg, Ca, Sr, Ba

It's two things.

Metallicity refers to the ability of an atom, molecule, or ion to lose electrons in a chemical reaction. The stronger the electron-losing particle, the more metallic the element belongs; Conversely, the weaker it is, the stronger its non-metallic properties are.

Metal liveliness is how active the metal is in a chemical reaction.

Lively metals have:1. Potassium, 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 ions:

Mg2+5, aluminum, element symbol: AL, corresponding ions: AL3+6, zinc, element symbol:

Zn, corresponding ions: Zn2+7, iron, element symbol: Fe, corresponding ions:

Fe2+8, Tin, Elemental Excitation Symbol: Sn, Corresponding Ion: Sn2+9, Lead, Elemental Symbol:

Pb, corresponding ion: Pb2+<>

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

Hg, corresponding ions: HG22+12, silver, element symbol: AG, corresponding ions:

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

Au, corresponding ion: Au3+

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.

Metal activity refers to the tendency of metal elements to lose electrons in aqueous solution to form metal cations, which belongs to the category of thermodynamics. Generally speaking, the activity of the elements in the periodic table from top to bottom and from right to left has an increasing trend, the essential reason is that with the increase of the metal radius, the number of electrons in the outermost shell decreases, and its ionization energy and sublimation energy decrease. However, for some special cases, such as lithium, due to its extremely small radius, the heat of hydration is high enough to compensate for the lack of sublimation heat and ionization energy, resulting in its activity in water is even higher than that of cesium.

1. The greater the activity, the faster the active metal will corrode.

2. There are many forms of metal corrosion, with electrochemical corrosion as the main form.

3. The greater the difference between the activity of the two metals, the greater the potential of the galvanic battery, the greater the current generated, and the faster the corrosion.

4. This is due to the fact that the potential difference between the two electrodes depends on the magnitude of the potential of the two pairs of electrodes.