periodic table help .... consider isotopes of Cl-35, Cl-37?

Question

would u place them in the same group or different groups due to the difference in atomic masses. explain (Mendeleev's periodic table)

Answer 1

Same group.

This is an isotope (same number of protons/electrons, different number of neutron), not a different element.

"The modern explanation of the pattern of the periodic table is that the elements in a group have similar (conch) configurations of the outermost electron shells of their atoms: as most chemical properties are dominated by outer electron."

Answer 2

The atomic mass as no influence on chemical properties.

TWO ISOTOPES HAVE THE SAME CHEMICAL PROPERTIES since the chemical properties depend only from the electrons

So Cl 35 and Cl 37 belong to the same group

Answer 3

this is an isotope. i will put them in the same group.

according to the periodic table, it states that there is a nucleon number of 35.5 . this is simply because 35.5 is their average. this is because in chlorine, it consists of 25% of cl-37 and 75% of cl-35.

0.25 x 37 = 9.25
0.75 x 35 = 26.25
nucleon number is 26.25 + 9.25
=35.5

Answer 4

There palace accordingly to the no of proton, electons they have.
All that differs is that the atomic mass is now an average weighting of the %% mass of isotopes.