Please wait...
1800-212-7858 (Toll Free)
9:00am - 8:00pm IST all days

or

Thanks, You will receive a call shortly.
Customer Support

You are very important to us

For any content/service related issues please contact on this toll free number

022-62211530

Mon to Sat - 11 AM to 8 PM

What were the main draw backs of the Mendeleev's periodic table?

Asked by Topperlearning User 27th June 2016, 11:01 AM
Answered by Expert
Answer:

The main draw backs of the Mendeleev's periodic table are as follows:
i) The position of hydrogen in the periodic table was not certain, it was placed in first as well as eighth group.
ii) Some elements of higher atomic weight were placed before the elements with lower atomic weight.
iii) Lanthanides and actinides were not given a proper position.
iv) Isotopes of elements were placed in the same position in the table.
v) The noble gases were not given any space in the periodic table.
vi) Some chemically similar elements were placed in different groups and some dissimilar elements were placed in the same group.

Answered by Expert 27th June 2016, 1:01 PM
Rate this answer
  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10

You have rated this answer /10

Your answer has been posted successfully!

Chat with us on WhatsApp