Question

4. 12Mg24 and 12Mg26 are symbols of two isotopes of magnesium. Compare atoms of these isotopes with
respect to
a) Composition of their nuclei; and
b) Their electronic configuration
c) Give the reason why the two isotopes of magnesium have different mass numbers.​

Answer 1

Answer:

a)12Mg24-12 protons

                 12 neutrons

 12Mg26-12 protons

                16 neutrons

b)2,8,2 (same for both)

c)Because they have different number of neutrons, which contribute to the increased mass but have no effect on charge.

Explanation: