Question

How many protons, neutrons, and

electrons are in an atom of bervllium with
a mass number of
9? Use a periodic table.
a.4 protons, 4 electrons, 5 neutrons
b. 4 protons, 4 electrons, 4 neutrons
c. 5 protons, 5 electrons, 4 neutrons
d. 4 protons, 4 electrons, 9 neutrons

Answer 1

Your answer is 4 protons 4 electrons and 5 neutrons