_E₂ = ABE₂ lar Shape of OF ₂ () охудел (2) Fluorine 2 вхудет Step 1: Find the Central Atom Central atom is: Look your line bond structure on page 1. {F: co F: Step 3: Choose the ABE classification Circle the correct AB,Ey notation. Recall, we use (A) to represent the central atom, (B) to represent the number of atoms bonded to the central atom, and (E) to represent the number of lone pairs AB₁E3 AB₁E2 AB₁E AB₂E AB₂E2 AB2 AB3E AB3 AB4 Step 5: Use the Molecular Shape table from your notes to draw the ball and stick representation Central atom A Batom surrounding central atoml lone pair E lone pair central atoml Step 2: Count number of atoms bonded to the central atom (B) # of atoms bonded to central atom = B = Count number of lone pairs on the central atom (E) # of lone pairs on central atom = E= 2 Step 4: Use the Molecular Shape Table from your notes to select the molecular shape and bond angles. Bent ~110° Molecular Shape= Bond angles = 2 Step 6: Determine Polarity Is the central atom surrounded by identical electron groups? Circle one: yes no If the answer was yes, then the molecule is nonpolar. If the answer is no, then the molecule is polar. Is the molecule polar? Circle one: (yes no Jor 23

Formal charges have an important role in organic chemistry since this concept helps us to know whether an atom in a molecule is neutral/bears a positive or negative charge. Even if some molecules are neutral, the atoms within that molecule need not be ne…

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