Cyanocobalamin is the most common and widely produced form of the chemical compounds that have vitamin B12 activity.
For example, the hadron constituents of atomic nuclei, neutrons and protons, have charges of 0 e and +1 e respectively; the neutron is composed of two down quarks and one up quark, and the proton of two up quarks and one down quark.
There are 11 protons and 11 electrons in an atom of sodium. There are also 12 neutrons(if stable) in the nucleus combined with the protons with electrons circling the neutron. There are 11 protons and 11 electrons in an atom of sodium.