What is the periodic table? How to memorize the periodic table alphabetical jingle

You must have experienced the periodic table of elements in chemistry. It is very giving you a headache to see so many long elements, let alone memorizing them. However, learning requires methods, and we should learn happily. Some smart people have developed a jingle for the periodic table. While having fun, they can also learn complex and hard-to-remember knowledge, killing two birds with one stone!

Contents of this article

1. What is the periodic table?

2. How to memorize the periodic table letter jingle

3. What is element 51 in the periodic table?

4. There are three principles for arranging the periodic table.

What is the periodic table?

The periodic table of chemical elements is arranged from small to large according to the atomic number. The list of chemical elements is generally rectangular. Some periodic tables have spaces so that elements with similar properties are grouped in the same group, such as alkali metals, alkaline earth metals, halogen elements, rare gases, etc. This is the formation of element partitions in the periodic table, and it is divided into seven main groups, seven sub-groups, Group VIII, and Group 0.

Since the periodic table can accurately predict the properties of various elements and the relationships between them, it is widely used in chemistry and other scientific fields. Russian chemist Mendeleev invented the first generation of periodic table in 1869. Since then, people have continuously proposed various types of periodic tables, no less than 170 types. The long periodic table has been used in teaching in my country for a long time.

How to memorize the periodic table letter jingle

How to memorize the periodic table letter jingle:

H, He, Li, Be, B, (hydrogen, helium, lithium, beryllium, boron).

C, N, O, F, Ne (carbon, nitrogen, oxygen, fluorine, neon).

Na, Mg, Al, Si, P, (sodium, magnesium, aluminum, silicon, phosphorus).

S, ClAr, K, Ca, (sulfur, chlorine, argon, potassium, calcium).

Sc, Ti, V, Cr, Mn, (scandium, titanium, vanadium, chromium, manganese).

Fe, Co, Ni, Cu, Zn, (iron, cobalt, nickel, copper, zinc).

It can be pronounced as: "Add that beautiful woman, zinc, iron, tin, lead, and hydrogen, a total of one hundred kilograms"

What is element 51 on the periodic table?

1. Element 51 of the periodic table is antimony. Antimony, with the symbol Sb and the subsequence number 51, is a metallic metalloid that exists primarily in the sulfide mineral stibnite in nature. It is known that antimony compounds were used as cosmetics in ancient times, and metallic antimony was also recorded in ancient times, but it was mistaken for lead at that time. Around the 17th century, people knew that antimony was a chemical element.

2. Silvery white, shiny, hard and brittle metal (often made into various shapes such as rods, blocks, powder, etc.). It has a scaly crystal structure. It gradually loses its luster in humid air and burns into white antimony oxide when heated. It is easily soluble in aqua regia and concentrated sulfuric acid. The relative density is 6.68, the melting point is 630℃, the boiling point is 1635℃, the atomic radius is 1.28, and the electronegativity is 2.2.

There are three principles for arranging the periodic table

1. Arrange from left to right in order of increasing atomic number;

2. Arrange the elements with the same number of electron shells in a horizontal row;

3. Elements with the same outermost electrons (similar outer electron configuration) are arranged in vertical rows from top to bottom in the order of increasing electron layers. A horizontal row in which elements with the same number of electron layers are arranged in the order of increasing atomic number is called a period.