Multiple Choice
Which of the following best describes the correct Lewis structure for (cyanoacetylene)?
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1. A Review of General Chemistry
Lewis Structure
Multiple Choice
After drawing the Lewis structure of , what is the ideal bond angle around the central carbon atom?
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Verified step by step guidance1
Identify the central atom in the molecule CHF\_3, which is carbon (C), since it forms the most bonds and is less electronegative than hydrogen and fluorine.
Draw the Lewis structure by placing carbon in the center, then connect it to one hydrogen (H) atom and three fluorine (F) atoms with single bonds, ensuring all atoms satisfy the octet rule where applicable.
Count the number of regions of electron density (bonding and lone pairs) around the central carbon atom. In CHF\_3, carbon has four single bonds and no lone pairs, so there are four regions of electron density.
Use the VSEPR (Valence Shell Electron Pair Repulsion) theory to determine the molecular geometry based on the four regions of electron density. Four bonding pairs with no lone pairs correspond to a tetrahedral geometry.
Recall that the ideal bond angle in a tetrahedral geometry is approximately \(109.5^\circ\), which is the angle between the bonds around the central carbon atom in CHF\_3.
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