Question

24/12MG and 26/Mg are symbols of two isotopes of magnesium.a) Compare the atoms of these isotopes with respect to:1) The composition of their nuclei.2) Their electronic configurations.b)Give reasons why the two isotopes if magnesium have different mass numbers.

Answer 1

Hey
1) Their nucleus contains different number of neutrons although the number of electrons and protons are same.

2) Their electronic configuration has no change as number of electrons is same in both.

3) Due to presence of more neutrons in nuclei the mass numbers of the two are same.

Hope it helps #))