What are valence electrons? The number of neutrons in a nucleus. The number of protons in the nucleus. The atomic mass is the same as the number of valence electrons. The number of electron in the outer most shell of an atom.

Valence Electrons are The number of electrons in the outer most shell of an atom. These shells have a maximum amount before being filled by electrons, in which remaining electrons will fill the next remaining valence shell.

is it a purebred? it looks more like a red nose, but it doesn't have the red could it be a staffordshire bull terrior? unsure if that's the right name for it sorry