The elements of chemistry are, what are chemical elements?

A chemical element is a general term for a class of atoms that have the same number of nuclear charges (the number of protons in the nucleus). From a philosophical point of view, elements are the result of a qualitative change caused by a quantitative change in the number of electrons in an atom. [1]

Chemical element refers to more than 100 basic metal and non-metal substances in nature, which are composed of only one kind of atom, and its nucleus has the same number of protons, which cannot be decomposed by ordinary chemical methods, and can constitute all substances. Some examples of common elements are hydrogen, nitrogen, and carbon.

As of 2012, a total of 118 elements have been discovered, 94 of which are found on Earth. Elements with an atomic number greater than 83 (after bismuth) are unstable and will decay by radiation. The 43rd and 61st elements (technetium and promethium) have no stable isotopes and decay.

However, even elements with atomic numbers as high as 95 and no stable nuclei can be found in nature, which is the natural decay of uranium and thorium.

A general term for a class of atoms with the same number of protons and therefore the same number of charges in the nucleus. For example, ** is a chemical element, because carbon exists in elemental form or in the form of chemical compounds, its nuclear power number is always six, and now it has been found that there are 106 kinds of chemical elements, referred to as elements.

In layman's terms, chemical elements are the basic elements that make up the world's substances, and the discussion is about the interaction between atoms and atoms!

Abbreviated as element, it is a general term for a class of atoms with the same number of protons in the nucleus. Elements are classified according to the number of nuclear charges, the number of nuclear charges of atoms is the key to determining the properties of elements, and chemical elements are the basis of all matter in the universe. The earliest concept of the element is to try to interpret the properties of matter.

In ancient Greece, Aristotle pointed out that all things are composed of four "elements": earth, air, fire, and water". In the 8th century AD, the Arabs replaced the ancient Greek "four elements" with the "three substrates" of sulfur, salt, and mercury.

Hydrogen leaker (qīng). Helium (hài). Lithium (lǐ). Beryllium (pí). Boron (péng).

2. Carbon (tàn). Nitrogen (dàn). oxygen (yǎng). Fluorine (fú). 氖 (nǎi).

3. Sodium (nà). Magnesium (měi). Aluminum (lǚ). Silicon (guī). Phosphorus (lín). Sulfur (liú).

4. Chlorine (lǜ). Argon (yà). potassium (jiǎ). Banquet rolling calcium (gài). Scandium (kàng). Titanium (tài). Vanadium (fán).

5. Chromium (gè). Manganese Huixiang potato (měng). Iron (tiě). Cobalt (gǔ). Nickel (niè). Copper (tóng). Zinc (xīn).

20 Common Chemistry Elements:

1 Hydrogen (qīng). 2 helium (hài). 3 lithium (lǐ).

4 Beryllium (pí). 5 boron (péng). 6 carbon (tàn).

7 nitrogen (dàn). 8 oxygen (yǎng). 9 fluorine (fú).

10 捖 (nǎi. 11 sodium (nà). 12 mg (měi).

13 aluminum (lǚ). 14 silicon (guī). 15 phosphorus (lín).

16 sulfur (liú). 17 chlorine (lǜ). 18 argon (yà).

19 potassium (jiǎ). 20 calcium (gài).