Question

in Chapter atoms and molecules 2 marks question and 3 marks question and practical based question​

Answer 1

There are two periodic laws in chemistry:

Periodic Law( older one which was proposed by Mendeleev)- it states that the physical and chemical properties of elements are a periodic function of their atomic mass.

Modern periodic Law ( it was proposed by Henry Moseley) - it states that the physical and chemical properties of elements is the periodic function of their atomic number.

BE YOURS........^_^

Answer 2

hi mate ❤️❤️❤️❤️❤️

please go to mycbseguide.com you will get everything you want their