Question

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

Explanation:

• Ethane has 2 carbon (black) and 6 hydrogen (white) atoms, matching the 4th model.
• Methane has 1 carbon (black) and 4 hydrogen (white) atoms, matching the 2nd model.
• Water has 1 oxygen (red) and 2 hydrogen (white) atoms, matching the 3rd model.
• Ammonia has 1 nitrogen (blue) and 3 hydrogen (white) atoms, matching the 1st model.

Answer:

1. ethane (C₂H₆) → 4th model (two black carbons, six white hydrogens)
2. methane (CH₄) → 2nd model (one black carbon, four white hydrogens)
3. water (H₂O) → 3rd model (one red oxygen, two white hydrogens)
4. ammonia (NH₃) → 1st model (one blue nitrogen, three white hydrogens)