Question

important point of periodic classification of elements class 10th ​

Answer 1

Some important points on Modern periodic table are :-

→ Today we are using modern periodic Table.

→ Modern periodic table was given my mendeleeves.

→ There are 118 elements exists today.

→ periodic table is made on the basis of atomic number.

→ There are elements, noble gases etc in the periodic table.

→ We can classify elements on the basis of atomic number and atomic masses.

Answer 2

1. A systematic study of elements: Elements with similar properties were grouped together, that made the study of their chemical and physical properties easier.

2. Correction of atomic masses: Placement of elements in Mendeleev's periodic table helped in correcting the atomic masses of certain elements.