To determine which substance would be most suitable for row 3, we need to consider the properties associated with different types of bonds and the given property, "malleable".
1. Malleability is a property that allows a substance to be hammered or rolled into thin sheets without breaking. Malleability is a characteristic of substances with metallic bonds. This means that the suitable substance for row 3 should have metallic bonding.
Let’s analyze the given substances one by one:
- Sodium chloride (NaCl): NaCl is an ionic compound. Ionic compounds typically form brittle crystals and are not malleable. They do not fit the property described in row 3.
- Silver (Ag): Silver has metallic bonds. Metals, including silver, are malleable and can be shaped without breaking. Silver is likely to fit the property described in row 3.
- Nitrogen (N₂): Nitrogen is a diatomic molecule with covalent bonds. Covalent bonds typically result in brittle substances or substances that are not malleable in their molecular form. Nitrogen does not fit the property described in row 3.
- Propane (C₃H₈): Propane is a covalent molecular compound found as a gas under standard conditions. It is not malleable. Therefore, propane also does not fit the property described in row 3.
Given the properties of the substances listed, the most suitable choice for row 3 is silver (Ag) because it has metallic bonds and exhibits the property of malleability.
