Question

match each molecule with its atomic model.
ethane (c₂h₆)
methane (ch₄)
water (h₂o)
ammonia (nh₃)

Explanation:

To solve this, we analyze the molecular structures:

• Ethane (\(C_2H_6\)): Has two carbon atoms bonded in a chain with six hydrogens. The last model (two black carbons with hydrogens) matches.
• Methane (\(CH_4\)): Tetrahedral structure with one carbon and four hydrogens. The second model (black carbon, four white hydrogens) matches.
• Water (\(H_2O\)): Bent structure with one oxygen (red) and two hydrogens. The third model (red oxygen, two white hydrogens) matches.
• Ammonia (\(NH_3\)): Trigonal pyramidal with one nitrogen (blue) and three hydrogens. The first model (blue nitrogen, three white hydrogens) matches.

Answer:

• ethane (\(C_2H_6\)) → the model with two black carbon atoms and six white hydrogen atoms.
• methane (\(CH_4\)) → the model with one black carbon atom and four white hydrogen atoms.
• water (\(H_2O\)) → the model with one red oxygen atom and two white hydrogen atoms.
• ammonia (\(NH_3\)) → the model with one blue nitrogen atom and three white hydrogen atoms.