Question

मेण्डेलीफ के आवर्त नियम और आधुनिक आवर्त नियम के अन्तरों को लिखिए ।

Answer 1

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

               

                                 Hydrogen was given a correct place

                                 This periodic table was based on atomic number.

                                 it contain 7 horizontal rows called periods and 18 vertical columns called groups

                                Separation of metals and non metals can be distinguished from each other.

                                Iso topes was given its places