47AgSilver107.8682 u
Silver (Ag)
Silver is a transition metal with atomic number 47, in period 5 and group 11 of the periodic table. Its atomic mass is 107.8682 u and its electron configuration is [Kr] 4d¹⁰ 5s¹. Solid at 25 °C.
Key facts
| Atomic number | 47 |
|---|
| Atomic mass | 107.8682 u |
|---|
| Category | Transition Metal |
|---|
| Period | 5 |
|---|
| Group | 11 |
|---|
| Block | d |
|---|
| Electron configuration | [Kr] 4d¹⁰ 5s¹ |
|---|
| Electrons per shell | 2, 8, 18, 18, 1 |
|---|
| Electronegativity (Pauling) | 1.93 |
|---|
| Oxidation states | −2, −1, +1, +2, +3common in bold |
|---|
| State at 25 °C | Solid |
|---|
| Melting point | 1234.93 K961.78 °C |
|---|
| Boiling point | 2435 K2161.85 °C |
|---|
| Density | 10.49 g/cm³ |
|---|
Atomic properties
| First ionization energy | 7.576 eV |
|---|
| Electron affinity | 125.6 kJ/mol |
|---|
| Atomic radius | 144 pm |
|---|
| Covalent radius | 145 pm |
|---|
| Van der Waals radius | 172 pm |
|---|
| Common ions | Ag⁺ |
|---|
| Protons, neutrons, electrons | 47, 61, 47 |
|---|
Physical and thermal properties
| Molar volume | 10.27 cm³/mol |
|---|
| Heat of fusion | 11.3 kJ/mol |
|---|
| Heat of vaporization | 255 kJ/mol |
|---|
| Specific heat | 235 J/(kg·K) |
|---|
| Thermal conductivity | 430 W/(m·K) |
|---|
| Thermal expansion | 1.89 × 10⁻⁵ K⁻¹ |
|---|
| Mohs hardness | 2.5 |
|---|
| Young’s modulus | 85 GPa |
|---|
| Crystal structure | Face-centered cubic |
|---|
| Magnetic type | Diamagnetic |
|---|
Identification and history
| CAS number | 7440-22-4 |
|---|
| Latin name | Argentum |
|---|
| Discovered by | Known since antiquity |
|---|
| Named by | --- |
|---|
Natural isotopes
| Isotope | Mass (u) | Abundance |
|---|
| 107Ag | 106.905092 | 51.839 % |
| 109Ag | 108.904756 | 48.161 % |
Data checked against PubChem (NIH), IUPAC, the NIST Atomic Spectra Database and the IAEA (NUBASE and AME), the same data you see in the app.
A dash (---) means there is no reliable published measurement. The app never makes one up.
See Silver in the app
Orbital diagram with Hund’s rule, emission spectrum, shell model, every isotope, a real photo, and comparison with any other element. Free, no ads, works offline.
Periodic Table