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Reading a Molecule From Two Views 4 questions
Reading a Molecule From Two Views
Base your answers on the information provided and your knowledge of chemistry. Use the 2025 Chemistry Reference Tables as needed.
A molecular display shows one unknown model from above. The image hides element labels. The unknown is either BF3, with three B–F bonds lying in a plane, or CH4, with four C–H bonds pointing in different directions in three dimensions. A bond pointing directly toward the viewer can project onto the central position.
Question 1
What can the top view establish by itself?
- Exactly three bonds exist.
- Four bonds are all visible.
- Three bonds are visible, and a bond along the viewing direction could be hidden.
- All bonds must lie in the same plane.
Question 2
Explain how either candidate could produce three visible spokes in this view.
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The class tilts the same model without changing any bonds. The new view shows four separate lines connecting the center to four outer atoms.
Question 3
Identify the unknown and explain why tilting the model changed the visible count.
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Question 4
Draw the center atom and all its bonded atoms. Label one bond that could point toward the viewer in the original view.
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