78
195.084 u
Pt
Platinum
Transition Metal
Atomic Structure
Physical State
Group
10
Period
6
Block
d
Electron Configuration
[Xe] 4f¹⁴ 5d⁹ 6s¹
Physical Properties
Atomic Mass:
195.084 u
Electronegativity:
2.28
Atomic Radius:
177 pm
Ionization Energy:
9 eV
Density:
21.45 g/cm³
Melting Point:
2041.4 K
Boiling Point:
4098 K
Historical Information
Discovered By:
Antonio de Ulloa
Year Discovered:
1735