Question

Name the anomalous pairs of elements in the Mendeleev's periodic table.

Answer 1

The anomalous pairs of elements in the Mandeleev's periodic table are for in stance Argon and Tellurium.

What it entails is that in certain pair of elements, what happens is that the increasing order in the Mandeleev's periodic table of atomic masses was not observed.

Therefore it implies that Mendeleev placed elements according to similarities in their properties. But he did not consider their increasing order of their atomic masses.

Answer 2

Explanation:

the the anomalous pairs present in the mediaeval period table are coblet,nickel,argon,potassium,iodine