Chlorine has two isotopes, viz. Cl-35 and Cl-37 Their atomic masses are 35 and 37. Their chemical properties are same. Where should these be placed in Mendeleev's periodic table? In different places or in the same place?

Explanation

The arrangement of elements in the Mendeleev's periodic table is done on the basis of atomic mass so that the elements having similar chemical properties are placed in the same group . Since the atomic masses of the isotopes of chorine are different but they have similar chemical properties, it would be difficult to assign them a proper position in Mendeleev's periodic table.