What do the 26 symbols in the periodic table mean?

2.helium helium helium

3. lithium lithium?

4. yes, yes, yes

5. boron b?

6. Carbon carbon

7. nitrogen?

8. oxygen o?

9. fluorine f?

10, neon ne?

1 1，Na？

12, magnesium Mg?

13 aluminum?

14, Silicon si?

15, phosphorus p?

16, sulfur s?

17, chlorine Cl?

18, argon ar?

19, potassium k?

20. Calcium?

2 1, scandium sc?

22. titanium ti?

23. vanadium v?

24. chromium Cr?

25.Mn Mn

26. Iron element

Element symbol is the only symbol used to mark elements, and it can also represent an atom of these elements. Most solid simple substances are also usually represented by symbols. Element symbols are usually represented by the first letter (capital letter) of the Latin name of an element, for example, carbon-C. If the first letters of several element names are the same, add another letter (capital letter) after the first letter (capital letter) in the element name to show the difference, for example, chlorine -Cl.

Extended data:

Symbolic meaning of elements

Chemical symbols and their usage rules are the unique language of chemistry, an important tool for studying the composition, structure and changing laws of substances in chemical science, and the basis for us to learn chemistry. Junior high school chemistry should attach importance to and do a good job in teaching chemical terms from the beginning, so that students can get used to using the language of chemical symbols to correctly express the composition, structure and changing laws of chemical processes and substances, and cultivate their logical thinking ability.

Element symbols, molecular formulas and chemical equations are typical structural forms of chemical terms, and its syllabus clearly points out: "Students should be able to write, read, use and understand their chemical meanings." That is, understanding, cognition and correctness. Chemical terms are abstract and difficult for students to understand at first. In order to overcome these cognitive difficulties, in the teaching process, students must first understand the meaning of element symbols, then deepen their understanding in the teaching of molecular formulas and chemical equations of substances, form a standardized and fixed chemical language, and use this chemical language to correctly express and study various chemical change processes and laws.

Baidu Encyclopedia-Element Symbol