For each of the following line-angle drawings,
(i) give the number of carbons,
(ii) label the carbons,
(iii) tell how many hydrogens are on each carbon, and
(iv) draw the hybrid structural formula.
(c)

Verified step by step guidance

Step 1: Count the number of carbons in the structure. Each vertex in the line-angle drawing represents a carbon atom, and each line represents a bond. Analyze the structure carefully to identify all carbons, including those in the ring and the chain.

Step 2: Label each carbon atom sequentially, starting from one end of the structure. Assign numbers to each carbon atom, ensuring clarity in the labeling process.

Step 3: Determine the number of hydrogens attached to each carbon. Remember that carbon forms four bonds in total. Subtract the number of bonds shown in the diagram (to other carbons or double bonds) from four to calculate the number of hydrogens on each carbon.

Step 4: Draw the hybrid structural formula. Replace the line-angle drawing with a detailed structure showing all carbons, hydrogens, and bonds explicitly. Include the double bond and the cyclopentane ring in the hybrid structure.

Step 5: Double-check your work to ensure all carbons and hydrogens are accounted for, and the hybrid structural formula accurately represents the original line-angle drawing.

Verified video answer for a similar problem:

This video solution was recommended by our tutors as helpful for the problem above.

Was this helpful?

Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Line-Angle Drawings

Line-angle drawings, also known as skeletal structures, are a simplified way to represent organic molecules. In these drawings, vertices represent carbon atoms, and lines represent bonds between them. Hydrogen atoms attached to carbons are usually omitted for clarity, as they are implied by the tetravalency of carbon. Understanding how to interpret these drawings is essential for identifying the number of carbons and their connectivity.

Hybridization

Hybridization is the concept that describes the mixing of atomic orbitals to form new hybrid orbitals, which can explain the geometry of molecular bonding. For carbon, the most common hybridizations are sp3, sp2, and sp, corresponding to tetrahedral, trigonal planar, and linear geometries, respectively. Knowing the hybridization of each carbon atom helps in determining the number of hydrogen atoms attached to it, as well as the overall structure of the molecule.

Valency and Hydrogen Count

Valency refers to the ability of an atom to bond with other atoms, which is determined by the number of electrons in its outer shell. For carbon, which has a valency of four, it can form four bonds with other atoms, typically hydrogen in organic compounds. By applying the concept of valency, one can deduce the number of hydrogen atoms attached to each carbon in a molecule, which is crucial for completing the structural formula.

Recommended video:

Guided course