AP Chemistry
2.4 Structure of Metals and Alloys
A student investigates the physical properties of three Period 4 metals and records the data shown in the table below.
Based on the data and the principles of metallic bonding, which of the following best explains the substantial increase in melting point from \(\text{K}\) to \(\text{Ti}\)?
| Metal | Atomic radius (\(\text{pm}\)) | Valence electrons per atom in electron sea | Melting point (\(^\circ\text{C}\)) |
|---|---|---|---|
| \(\text{K}\) | 227 | 1 | 64 |
| \(\text{Ca}\) | 197 | 2 | 842 |
| \(\text{Ti}\) | 147 | 4 | 1668 |
Based on the data and the principles of metallic bonding, which of the following best explains the substantial increase in melting point from \(\text{K}\) to \(\text{Ti}\)?
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