Solved Exercise, Chem-12, Ch-01
![](https://exceptionaleducations.com/wp-content/uploads/2023/12/S.Ex_.-Feature-Image-Chem-12-Ch-01-768x768.webp)
PERIODIC CLASSIFICATION OF ELEMENTS AND PERIODICITY FILL IN THE BLANKS Q.01: Fill in the blanks: (i) Mendeleev in his periodic table, arranged the elements according to their atomic ___. (mass) (ii) Vertical columns in modern periodic table are called _________…