Science, asked by Myin9226, 1 year ago

Newland and mendeleevs merits and demerits

Answers

Answered by anissankarv

Advantage of Mendeleev Periodic Table :-

1.He left blank Places which help scientist to discover new element

2.When Noble gasses was discovered He could add it to periodic table without any major change

3.He predicted the property of new element

Disadvantages :-

1. Couldn't explain position of Hydrogen

2. Couldn't answer the question "Can we have an element with atomic mass 3 between Hydrogen and Helium

3 He placed cobalt before Nickel though Cobalt has more mass

Abhimax: Here are Newland's merits and demerits...

Merits:
⭕️He was able to determine a periodic nature of elements.
⭕️He was also able to relate this periodic nature with the atomic masses of the elements

Demerits:
⭕️The periodicity continues only uptil Calcium
⭕️Newland asumed that there are only 56 elements on nature.
⭕️He also place Co and Ni together in one box and also away from iron which has similar properties...

Hope this helped

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