Respuesta :
Answer:
Valence electrons are the electrons in the outermost shell, or energy level, of an atom.
Example:
Oxygen has six valence electrons, two in the 2s subshell and four in the 2p subshell.
Answer:
Valence electrons are the electrons in the outermost shell, or energy level, of an atom.
Example:
Oxygen has six valence electrons, two in the 2s subshell and four in the 2p subshell.