Question

what are the merits and demerits of modern periodic table.

Answer 1

Answer:

(i) The modern periodic table is based on the atomic numbers of elements which is the most fundamental property of elements.

(ii) It helps us to understand why elements in a group show similar properties but elements in different groups show different properties.

(iii) It explains the reasons for the periodicity in properties of elements.

(iv) It tells us why the properties of elements are repeated after 2, 8, 18 and 32 elements.

pls mark me brainlist

Explanation:

Answer 2

Merits are:

• The classification of the elements is based on atomic number, which is the more fundamental property.

• The reason for the placing isotopes in one place is justified as  classification is on the basis of the atomic number.

• It explains periodicity of the properties of a elements & relates them to their electronic configurations.

• The position of the elements that their misfits on basis of the mass number (anomalous pairs like argon and potassium) it could be justified on basis of atomic number.

• The lanthanides & actinides are the placed separately at & the bottom of a periodic table.

• The table is the simple, systematic, & easy way for remembering the properties of the various elements as it is based on electronic configuration.

Demerits :

• Hydrogen resembles the both alkali metals & halogens, but it has been placed with the alkalis.

• The lanthanides & actinides have not been placed in the main body of table.

• Helium is the of S-block still kept in p-block due to the noble gas property.

#SPJ3