Me i will give
fluorine-19 is an isotope of fluorine. it has a different number of
a. electrons
b. protons
c. neutrons
d. electron shells

Flourine-19 has 19 electrons, 9 protons, and 10 neutrons.

Flourine has 9 electrons, 9 protons, and 10 neutrons.

So the answer would be A. electrons.

Hope this helps!

bcde is the incorrect answer it is a

catya your not at all which answer i've seen you do this on another question!