82Pb207
Lead
Post-Transition Metal
Solid at STP
Period 6Group 14Block PDiscovered Ancient
[Xe]6s2 4f14 5d10 6p2
Lead (/lɛd/) is a chemical element in the carbon group with symbol Pb (from Latin:plumbum) and atomic number 82. Lead is a soft, malleable and heavy post-transition metal. Metallic lead has a bluish-white color after being freshly cut, but it soon tarnishes to a dull grayish color when exposed to air.
📖 Read more on Wikipedia →Atomic Properties
| Atomic Number | 82 |
| Atomic Mass | 207 u |
| Electron Configuration | [Xe]6s2 4f14 5d10 6p2 |
| Oxidation States | +4, +2 |
| Electronegativity | 2.33 (Pauling) |
| Atomic Radius | 202 pm |
| Ionization Energy | 7.417 eV |
| Electron Affinity | 0.36 eV |
| Block | P |
Physical Properties
| Appearance | metallic gray |
| Standard State | Solid |
| Melting Point | 600.61 K (327.5 °C) |
| Boiling Point | 2022 K (1748.8 °C) |
| Density | 11.342 g/cm³ |
| Molar Heat | 26.65 J/(mol·K) |
| CPK Color | #575961 |
Classification
| Category | Post-Transition Metal |
| Group Block | Post-transition metal |
| Period | 6 |
| Group | 14 |
| Block | P |
Discovery
| Year Discovered | Ancient |
| Discovered By | Middle East |
| Electron Shells | 2, 8, 18, 32, 18, 4 |