Question

question 5 of 10
which of the following is the correct model of $\ce{c_{8}h_{18}}$?
\\(\bigcirc\\) a.
\\(\bigcirc\\) b.
\\(\bigcirc\\) c.
\\(\bigcirc\\) d.

Explanation:

To determine the correct model for \( C_8H_{18} \) (octane, an alkane with the formula \( C_nH_{2n + 2} \), so for \( n = 8 \), \( H = 2(8)+2 = 18 \)), we analyze the carbon chain length. The model should represent 8 carbon atoms. Option A has a chain that corresponds to 8 carbon atoms (counting the peaks and ends: each "zig - zag" segment or end represents a carbon, and for \( C_8 \), the chain length in the model should match 8 carbons. Options B, C, D have shorter chains (fewer carbon atoms), so A is correct.

Answer:

A. The model with the chain that represents 8 carbon atoms (the zig - zag chain long enough for \( C_8H_{18} \))