which of the following do you need to complete this model for a beryllium (be) atom? choose all that apply

A. 1 more proton
B. 2 more neutrons
C. 3 more electrons
D. 2 more electrons
E. 1 more neutron

The correct options to complete the model for a beryllium (Be) atom are:

A. 1 more proton
C. 3 more electrons
E. 1 more neutron