Question

which drawing is a structural model of c₃h₈?
a.
b.
c.
d. h - c - c - c - h

h h h

h h h

Explanation:

Step1: Analyze structure of C₃H₈

Propane (C₃H₈) has 3 carbon atoms in a chain with single - bonds between them and hydrogen atoms attached to satisfy the valency of carbon (4 - valent).

Step2: Evaluate each option

• Option A: This is a line - angle formula which doesn't show all atoms clearly and doesn't represent C₃H₈ correctly.
• Option B: This is a ball - and - stick model showing 3 carbon atoms in a chain with appropriate number of hydrogen atoms attached to each carbon, representing C₃H₈.
• Option C: This appears to be a space - filling model but doesn't represent the correct structure of C₃H₈.
• Option D: This is a structural formula but has an incorrect number of bonds on one of the carbon atoms.

Answer:

B.