Chemical Bonding: Valence Electrons

Chemical Bonding: Valence Electrons

To be successful in chemistry you must be able to find the number of valence electrons for individual elements.

A few things to note:

• On the periodic table Groups go up and down (they are the columns).
• The Group Number represents the number of valence electrons. The problem is that different periodic tables often use different numbering systems (see video for explanation).
• We’ll ignore the transition metals. They have valence electrons but the pattern is not as easily predicted as the other groups.