Question

position of isotopes in the mendeleevs and modern periodic table

Answer 1

Position of isotopes: Isotopes have the same atomic number, similar chemical properties but different atomic masses. Based on the periodic law, an isotope is an element, which must have a separate place in theperiodic table. However, there are no places for isotopes in his periodic table.

Answer 2

देयर इज़ नो आइसोटोप इन मेंडलीफ पीरियोडिक टेबल