39Y88.90584
Yttrium
Transition Metal
Solid at STP
Period 5Group 3Block DDiscovered 1794
[Kr]5s2 4d1
Yttrium is a chemical element with symbol Y and atomic number 39. It is a silvery-metallic transition metal chemically similar to the lanthanides and it has often been classified as a "rare earth element". Yttrium is almost always found combined with the lanthanides in rare earth minerals and is never found in nature as a free element.
📖 Read more on Wikipedia →Atomic Properties
| Atomic Number | 39 |
| Atomic Mass | 88.90584 u |
| Electron Configuration | [Kr]5s2 4d1 |
| Oxidation States | +3 |
| Electronegativity | 1.22 (Pauling) |
| Atomic Radius | 219 pm |
| Ionization Energy | 6.217 eV |
| Electron Affinity | 0.307 eV |
| Block | D |
Physical Properties
| Appearance | silvery white |
| Standard State | Solid |
| Melting Point | 1795 K (1521.8 °C) |
| Boiling Point | 3618 K (3344.8 °C) |
| Density | 4.47 g/cm³ |
| Molar Heat | 26.53 J/(mol·K) |
| CPK Color | #94FFFF |
Classification
| Category | Transition Metal |
| Group Block | Transition metal |
| Period | 5 |
| Group | 3 |
| Block | D |
Discovery
| Year Discovered | 1794 |
| Discovered By | Johan Gadolin |
| Electron Shells | 2, 8, 18, 9, 2 |