Question

State modern periodic law ?
Mention the position of
i) hydrogen
ii) isotope same elements in the modern periodic table ?

Answer 1

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⭐Modern periodic law
▶▶Model periodic law states that the physical and chemical properties of an element Are periodic function of its mass number

⭐Position of hydrogen
▶▶Hydrogen is placed on top of periodic table so that it may not affect the symmetry of position of elements in periodic table

⭐isotope same elements in the modern periodic table..
▶▶ there position is same as that of their respective element