10. In the following table, some elements have been arranged in a certain pattern: sa (do) H F CI Co and Ni Br re (re) Li Na K Cu Rb ga (mi) Be Mg Ca Zn Sr ma (fa) B Al Cr Y Ce and La pa (so) C Si Ti In Zr A da (la) N P Mn As - ni (ti) O S Fe Se Identify the periodic law with which the given table is associated. List two important features and two anomalies of the above periodic law.
