Antimony (Sb) — Metalloid. Atomic number 51.
Silvery lustrous metalloid
- Atomic number: 51
- Symbol: Sb
- Atomic mass: 121.76 u
- Category: Metalloid
- State: Solid
- Melting point: 630.65 °C / 903.8 K
- Boiling point: 1586.85 °C / 1860 K
- Density: 6.68 g/cm³ (20°C)
- Electron configuration: [Kr] 4d10 5s2 5p3
- Oxidation states: −3, +3, +5
- Electronegativity: 2.05
- Discovered by: Known since antiquity
Common uses: Flame retardants, Batteries, Semiconductors
Biological role: No biological role.
Frequently Asked Questions about Antimony
What is the atomic number of antimony?
Antimony has an atomic number of 51, meaning each atom contains 51 protons in its nucleus.
What is the atomic mass of antimony?
The standard atomic weight of antimony is 121.76 u (unified atomic mass units).
What category does antimony belong to?
Antimony is classified as a metalloid.
What is the state of antimony at room temperature?
Antimony is a solid at 20 °C (68 °F).
What is the melting point of antimony?
The melting point of antimony is 630.65 °C / 903.8 K.
What is the boiling point of antimony?
The boiling point of antimony is 1586.85 °C / 1860 K.
What is the density of antimony?
The density of antimony is 6.68 g/cm³ (20°C).
What is the electronegativity of antimony?
Antimony has a Pauling electronegativity of 2.05.
What is the electron configuration of antimony?
The electron configuration of antimony is [Kr] 4d10 5s2 5p3.
What are the common oxidation states of antimony?
Antimony commonly exhibits the following oxidation states: −3, +3, +5.
Is antimony radioactive?
Antimony is a stable element with no naturally occurring radioactive isotopes.
What is the biological role of antimony?
No biological role.
What are the common uses of antimony?
Antimony is used for: Flame retardants; Batteries; Semiconductors.
