isotopes

Question 1

what is meant by an isotope ?

Answer 1

atoms of the same element that have the same number of protons but a different number of neutrons

Question 2

what is an isotope in terms of atomic number and mass number ?

Answer 2

atoms of the same element with the same atomic number but a different mass number

Question 3

what is the reactivity of isotopes ?

Answer 3

they will react in the same way chemically
- because reactivity is influenced by electrons and because they all still have the same atomic number, they have the exact same amount of electrons