How many valence electrons does `He` have?

Related questions

• How do valence electrons affect chemical bonding?
• How do valence electrons determine chemical properties?
• How do valence electrons determine chemical reactivity?
• How many valence electrons are in a silicon atom?
• How many valence electrons are in an atom of chlorine?
• How many valence electrons are in an atom of magnesium?
• How many valence electrons are in an atom of phosphorus?
• How many valence electrons are in an atom of bromine?
• How many valence electrons are in carbon?
• Why are valence electrons responsible for the behavior of the atom?