Question

What are the merits of Mendeleev's Periodic Table......4 to 6 points..

Answer 1

1.
Elements are arranged in order of their increasing atomic masses.
This makes elements with the same properties fall under a same vertical column

2.
Errors in atomic masses of some elements can be predicted.
Eg: Berelium Be - Corrected from 13.5 to 9

3.
It is possible to predict the properties of unknown or missing elements from the known properties of elements in the same group.

Eg: Before the Names given to Scanduim Sc, Gallium Ga, Germanium Ge were called eka-boron, eka-aluminium, and eka-silicon

Answer 2

hope this answer helps you