you can find electrons by subtract the atomic number and atomic mass.
Number of Electrons = Atomic Number
there are 5 electrons in boron
The # of electrons is the same are the # of protons.
If you can find a dot diagram, look at the outer shell and count the electrons. The outer electrons is the amount of valence electrons.
Valence electrons
If you're referring to the nucleus of an atom, the answer is electrons.
Valence electrons are on the external shell.
an atom
the number of valence electrons is the number group on the table its on
Electrons are found outside the nucleus of the atom and they have negative charge.
You can find this information from the periodic table.
electron=atomic number
is a compound