本论文围绕大学无机化学第五章原子结构和元素周期律的内容设计的。在公元前

This thesis is designed around the content of the fifth chapter of the university's inorganic chemistry, atomic structure and element periodic law. In the 5th century BC, the ancient Greek philosopher Democritus put forward the "ancient atom theory" and pointed out that every substance is composed of one kind of atom, which is the smallest, indivisible, and immutable particle of matter. Until the end of the 18th century and the beginning of the 19th century, with the discovery of the law of conservation of mass, the law of equivalents, the law of multiplication, etc., people had a new understanding of the concept of atoms. In the early 19th century, British chemist Dalton founded "Atom Theory" and became the father of chemistry. This chapter mainly introduces the structural theory of atoms, the description of the state of movement of electrons outside the nucleus, clarifies the relationship between the atomic structure and the periodic table and the periodic law through the arrangement of electrons outside the nucleus, and discusses the regular relationship between the atomic structure and the properties of the elements. The periodic law of the elements is the basis for the arrangement of the periodic table, and the periodic table is the specific manifestation of the periodic law of the elements. Periodic law of elements: With the increase of atomic number, the number of nuclear charges increases: atomic structure, atomic radius, main valence of elements, and metallicity and non-metallicity of elements change periodically.

This paper is designed around the contents of the atomic structure and periodic law of elements in chapter V of inorganic chemistry in universities. In the 5th century BC, the ancient Greek philosopher Demokrit proposed the "ancient atom theory" to point out that each substance is made up of an atom, which is the smallest, non-separable, eternal particles of matter. Until the end of the 18th century and the beginning of the 19th century, with the discovery of the law of mass conservation, the law of equivalent, the law of pimbiency, and so on, people have a new understanding of the concept of atoms. In the early 19th century, Dalton, an English chemist, founded Atomic Theory and became the father of chemistry. This chapter mainly introduces the structural theory of atoms, the description of the state of extranuclear electron motion, expounds the relationship between atomic structure and element periodic table and periodic law through the law of extranuclear electron arrangement, and discusses the regular relationship between atomic structure and elemental properties. The periodic law of elements is the basis of the arrangement of periodic tables of elements, and the periodic tables of elements are the concrete manifestations of periodic laws of elements. Elemental periodic law: With the increase of atomic number, the number of nuclear power load increases: atomic structure, atomic radius, element mainly combined, the metality and non-metallicity of the element change periodically.

This paper focuses on the contents of the atomic structure and periodic law of elements in Chapter 5 of inorganic chemistry of University. In the 5th century BC, democrit, the ancient Greek philosopher, proposed the theory of ancient atoms, pointing out that each substance is composed of one atom, and that atoms are the smallest, indivisible and permanent particles of matter. Until the end of the 18th century and the beginning of the 19th century, with the discovery of the laws of conservation of mass, the law of equivalent and the law of times, people had a new understanding of the concept of atom. In the early 19th century, Dalton, a British chemist, founded the theory of atoms and became the father of chemistry. This chapter mainly introduces the structure theory of atoms, the description of the state of the electrons outside the nucleus. The relationship between the atomic structure and the periodic table and the periodic law is clarified by the arrangement of the electrons outside the nucleus, and the regular relationship between the atomic structure and the element properties is discussed. The periodic law of elements is the basis of the arrangement of periodic table of elements, and the periodic table of elements is the concrete expression of the periodic law of elements. Periodic law of elements: with the increase of atomic number, the number of nuclear charges increases: atomic structure, atomic radius, main valence of elements, metal and nonmetallic properties of elements change periodically.<br>