Question

Consider the following isotopes of chlorine:17CL35 , 17 CL37
Atomic masses of these isotopes are different, while their chemical properties are same .
In the Mendeleev's periodic table, isotopes of chlorine was placed

Answer 1

Mendeleev's periodic table is based on the periodic function of the masses of elements.so the isotopes of chlorine 17Cl35 and 17Cl37 should be placed in separate places.