Summary:
- A chemical reaction involves either electron removal, electron addition, or electron sharing.
- The path a specific element will take depends on where the electrons are in the atom and how many there are.
- Valence electrons are the electrons in the highest occupied principal energy level of an atom.
- The number of valence electrons goes up by one for each step across a period until the last element is reached.
- Neon, with its configuration ending in s2p6, has eightValence electrons.
- How many valence electron does boron have?