To determine the most suitable substance for row 3 given that it must be malleable, let's analyze each of the provided substances in terms of their bonding type and properties.
1. Sodium chloride (NaCl):
- Type of bond: Ionic.
- Likely property: Ionic compounds like NaCl are typically brittle, not malleable.
2. Silver (Ag):
- Type of bond: Metallic.
- Likely property: Metals are typically malleable due to the nature of metallic bonding, which allows atoms to slide past each other without breaking the bond. This fits the requirement of row 3.
3. Nitrogen (N₂):
- Type of bond: Covalent.
- Likely property: Molecular nitrogen is a gas at room temperature and does not exhibit malleability; it would not fit the malleable property required in row 3.
4. Propane (C₃H₈):
- Type of bond: Covalent.
- Likely property: Propane is a gas at room temperature and lacks malleable characteristics.
Given the requirement that the substance for row 3 must be malleable, the analysis shows that the most suitable substance is:
Silver (Ag)
