Question

describe two merits of long form periodic table over the mendeleevs periodic table​

Answer 1

1. Modern periodic table is based on the most fundamental property, the atomic number of elements, while Mendeleev’s periodic table is based upon the atomic masses of elements.

2. Modern periodic table explains clearly why elements in a group display similar properties. It also explains why elements of a group differ in properties from the elements of other groups.

I hope it will be helpful for you ✌️✌️

Mark it as brainliest and

Fóllòw MË ☺️☺️

Answer 2

Answer:

1) to give the proper place in the periodis table, atomic masses of some dements were revised in accordance with their property.

2)Mendelar had kept some vacant places in periodic table far element that were yet to be discovered.