Draw a detailed venn diagram differentiating between Modern P Table and Mendeleev's P Table Thank you - Chemistry - Periodic Classification of Elements

Question

Draw a detailed venn diagram differentiating between Modern P Table
and Mendeleev's P Table Thank you

Mohd Raza · Accepted Answer

Dear Students,

Differences between Mendeleev's Periodic table and Modern periodic
table:

Mendeleev's periodic table

Modern Periodic table

1 According to Mendeleev theory, the physical and chemical
properties are the periodic function of the atomic
weights of elements

1 It considers that, chemical and physical properties are the
periodic function of the atomic numbers of
elements

2 The basis of classification was the formula of hydrides and
oxides made by the elements

2 Ths basis of classification is the electronic configuration of
the elements

4 The noble elements were not include as they were not
discovered at that time

4 It included noble elements in gr 18 as a last and separated
group

5 It has an ambiguity in position of some elements as, some
elements with larger atomic weights are placed before elements with
smaller atomic weight without any justified reason

5 Here, all are arranged systematically with increasing atomic
no and weight too

6 According to this theory, the isotopes with different atomic
weights, should be placed in different positions, but are not given
any position and no, justified reason was explained

6 The isotopes were assigned same position as they have same
atomic no

7 Some different elements were grouped together while some
similar elements were placed in different groups Ex: alkali metals
like Li , Na, K were placed with coinage metals Cu,Ag, Au etc

7 No such confusion, the coinage metals have their own position
in d-block and alkali metals are placed in s-block elements

8 Group VIII has three elements together, as Fe, Co, Ni

8 These elements are placed in different groups , under d-block
elements

Besides these differences, there are various chemical and
physical differences in properties of elements in the two periodic
tables

Regards

Mendeleev's periodic table	Modern Periodic table
1. According to Mendeleev theory, the physical and chemical properties are the periodic function of the atomic weights of elements.	1. It considers that, chemical and physical properties are the periodic function of the atomic numbers of elements.
2.The basis of classification was the formula of hydrides and oxides made by the elements.	2.Ths basis of classification is the electronic configuration of the elements.
4. The noble elements were not include as they were not discovered at that time.	4.It included noble elements in gr. 18 as a last and separated group.
5. It has an ambiguity in position of some elements as, some elements with larger atomic weights are placed before elements with smaller atomic weight without any justified reason.	5. Here, all are arranged systematically with increasing atomic no. and weight too.
6. According to this theory, the isotopes with different atomic weights, should be placed in different positions, but are not given any position and no, justified reason was explained.	6. The isotopes were assigned same position as they have same atomic no.
7.Some different elements were grouped together while some similar elements were placed in different groups. Ex: alkali metals like Li , Na, K were placed with coinage metals Cu,Ag, Au etc.	7. No such confusion, the coinage metals have their own position in d-block and alkali metals are placed in s-block elements
8. Group VIII has three elements together, as Fe, Co, Ni	8. These elements are placed in different groups , under d-block elements.

Draw a detailed venn diagram differentiating between Modern P. Table and Mendeleev's P. Table. Thank you.