Anomalies In The Periodic Table. Grouping of chemically dissimilar elements. In the Modern Periodic table elements are arranged in the increasing order of their atomic number.
Ar 3d 5 4s 1. Grouped by periods and shown in correct order of orbital filling. Anomalies of Mendeleevs Periodic Table.
Many textbook and wall-chart periodic tables show group 3 as consisting of the elements scandium yttrium lanthanum and actinium.
The second anomaly found on the graph occurs at elements 7 and 8 Nitrogen and Oxygen. Trouble in group 3. Separation of chemically similar elements. So I went to search this on Google and found.
