Question

डोबेराइनर ( डोबरनियर ) का त्रिक नियम को उदाहरण सहित समझाओ ।​

Answer 1

according to dobereiner's triads the atomic mass of the middle element is roughly equal to the average of the atomic masses of the other two elements of the triad.

For example, a triad consists of the elements lithium sodium and potassium.

At.mass of lithium=7;potassium=39

average of their atomic masses=39+7/2=46/2=23=atomic mass of sodium

hope it helps u....