78
Pt
Platinum
Platinum
Platinum (Pt)
Transition Metals · Solid · Period 6 · Group 10
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Element Properties
- Atomic Number
- 78
- Symbol
- Pt
- Atomic Mass
- 195.08
- Category
- Transition Metals
- Standard State
- Solid
- Period
- 6
- Group
- 10
- Electronegativity
- 2.28
- Atomic Radius
- 209
- Ionization Energy
- 9
- Electron Affinity
- 2.13
- Oxidation States
- +4, +2
- Melting Point
- 2041.55 K (1768.4 °C)
- Boiling Point
- 4098 K (3824.85 °C)
- Density
- 21.46
- Electron Configuration
- [Xe]6s1 4f14 5d9
- Year Discovered
- 1735
Frequently asked questions
What is the atomic number of Platinum?
The atomic number of Platinum is 78, which equals the number of protons in its nucleus.
What is the atomic mass of Platinum?
The atomic mass of Platinum is approximately 195.08 u (one twelfth of the mass of a carbon-12 atom).
What is the electron configuration of Platinum?
The electron configuration of Platinum is [Xe]6s1 4f14 5d9.
Where is Platinum in the periodic table?
Platinum is located in period 6, group 10.
When was Platinum discovered?
Platinum was discovered in 1735.