How can you determine the number of electrons in an element

- How can you determine the number of electrons in an element outer energy level by the group is in
- How can you determine the number of electrons in an element's outer energy level
- How can you determine the number of valence electrons in an element
- How can you determine the number of valence electrons in an element using the periodic table
- How to find the number of neutrons in an element
- How to find number of protons neutrons and electrons
- How to find proton neutron and electron of an element
- How to calculate the number of neutrons in an atom