In this video explains about the earlier attempts for classification, the first
successful classification which included all the known elements at that time namely
Mendeleev’s periodic table, and about the long form of modern periodic table which is an improvement over Mendeleev’s work. Finally we shall learn about some properties of
elements and their variations in the periodic table.
OBJECTIVES:
After completing this lesson, you will be able to:
- state the importance of periodic classification and periodic table;
- state main features of Mendeleev’s periodic table;
- state modern periodic law;
- describe the features of the long form of periodic table;
- state s, p, d and f-blocks and their properties.
- define various periodic properties.
- discuss the trends in various periodic properties in the periodic table.
- understand lanthanide contraction and actinide contraction.

ที่มา : http://www.7active.in

ลิงค์ : https://youtu.be/05Q3Hv9uRu0

อัพโหลดโดย : 7activestudio