@drlorimarie: Lewis Dot Structures The Fast Way 🧪 The reason students struggle isn't the chemistry. It's that they were taught the components without a systematic process. Here's the process. Step 1: Count total valence electrons. Add valence electrons from each atom. For charges, add for negative and subtract for positive. This is your electron budget. Step 2: Identify the central atom. Usually the least electronegative (excluding hydrogen, which is never central). Carbon is almost always central when present. Step 3: Connect the central atom to surrounding atoms with single bonds. Each single bond uses 2 electrons from your budget. Subtract what you've used. Step 4: Distribute remaining electrons as lone pairs. Outer atoms first (complete their octets), then remaining electrons on the central atom. Step 5: Check octets. If the central atom isn't full, convert lone pairs from neighbors into double or triple bonds until everyone has 8. Hydrogen needs 2. Count, center, connect, distribute, check. Practice on five molecules and it becomes automatic. Save this for your next gen chem review. #mcatprep #chemistry #mcat #premed #stemexcellence

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2026-06-25 05:35:52

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