Question

मेण्डलीफ की आवर्त-सारणी के गुण तथा दोषों का उल्लेख कीजिए ।

Answer 1

Answer:

DIFFERENCE:

MENDELEEV periodic table:

                                Here, hydrogen was not given a specific place.

                                This periodic table was based on mass number.

                                It has eight vertical columns called groups and 12 horizondal rows called periods.

                               seperation of metals and non metals cannot be distinguished from each other.

                                Iso topes are not given place

MORDEN PERODIC TABLE