52Te127.6
Tellurium
Metalloid
Solid at STP
Period 5Group 16Block PDiscovered 1782
[Kr]5s2 4d10 5p4
Tellurium is a chemical element with symbol Te and atomic number 52. It is a brittle, mildly toxic, rare, silver-white metalloid. Tellurium is chemically related to selenium and sulfur.
📖 Read more on Wikipedia →Atomic Properties
| Atomic Number | 52 |
| Atomic Mass | 127.6 u |
| Electron Configuration | [Kr]5s2 4d10 5p4 |
| Oxidation States | +6, +4, -2 |
| Electronegativity | 2.1 (Pauling) |
| Atomic Radius | 206 pm |
| Ionization Energy | 9.01 eV |
| Electron Affinity | 1.971 eV |
| Block | P |
Physical Properties
| Standard State | Solid |
| Melting Point | 722.66 K (449.5 °C) |
| Boiling Point | 1261 K (987.9 °C) |
| Density | 6.232 g/cm³ |
| Molar Heat | 25.73 J/(mol·K) |
| CPK Color | #D47A00 |
Classification
| Category | Metalloid |
| Group Block | Metalloid |
| Period | 5 |
| Group | 16 |
| Block | P |
Discovery
| Year Discovered | 1782 |
| Discovered By | Franz-Joseph Müller von Reichenstein |
| Electron Shells | 2, 8, 18, 18, 6 |