Question

What are the merits of Mendeleev's periodic table?

Answer 1

Merits of Mendeleev's periodic table:

• Prediction of new elements: The existence and properties of elements that are similar to Boron/Aluminum/Silicon is predicted by Mendeleev.
• He left the gap after some elements and gave them hypothetical names such as Eka-Alumium/Eka-Silicon.
• He took more similarities in properties than to atomic mass in the arrangement such as Iodine $\left(\mathrm{I}\right)$ has a smaller weight than Tellurium $\left(\mathrm{Te}\right)$ but it was placed after it.
• From the periodic properties, Beryllium $\left(\mathrm{Be}\right)$, Indium $\left(\mathrm{In}\right)$, Gold $\left(\mathrm{Au}\right)$, and Platinum $\left(\mathrm{Pt}\right)$ were predicted to be having inaccurate mass which lead to the re-estimation of their real masses.