So, what do we need to know? the difference between a lone pair and a bonding pair that both lone pairs and bonding pairs are considered effective pairs of electrons that a multiple bond is one effective pair
So, how do we get started? Determine the Lewis dot structure. Count the number of effective pairs around the central atom and determine if any of those are lone pairs Match the number of effective pairs and lone pairs with the chart of shapes and bond angles that you’ve memorized!