78 Pt Platinum 195.08 u

Platinum

Period
6
Group
10
Block
d-block
Phase (STP)
Solid

Platinum is a precious metal used in catalytic converters, jewelry, and chemotherapy drugs. It is highly resistant to corrosion.

About Platinum

Prized in catalysis, jewelry, and medicine, platinum (Pt) is among the most versatile of the precious metals. Element 78 sits in group 10 of period 6 in the d-block, with an atomic mass of 195.08, the electron configuration [Xe] 4f¹⁴ 5d⁹ 6s¹, and a Pauling electronegativity of 2.28. Its catalytic power drives the automotive catalytic converters that clean exhaust gases and many industrial chemical processes, while platinum-based drugs such as cisplatin are mainstays of chemotherapy. Highly resistant to corrosion and tarnish, the dense, silvery-white metal is solid at standard conditions and has long served as a store of value.

Physical Properties

Atomic Mass 195.08 u
Phase at STP Solid

Electronic Properties

Electronegativity 2.28

Electron Configuration

Configuration [Xe] 4f¹⁴ 5d⁹ 6s¹

Electron Shell Configuration

Platinum electron shell configuration Pt 2e⁻ 8e⁻ 18e⁻ 32e⁻ 17e⁻ 1e⁻
Electron shell structure of Platinum — electrons per shell.
Shell Electrons
1 (K) 2
2 (L) 8
3 (M) 18
4 (N) 32
5 (O) 17
6 (P) 1

Position in Periodic Table

Platinum position in the periodic table Pt

Block & Period

Block

s p d f

Period

1 2 3 4 5 6 7

Periodic Table

Lanthanides Actinides

Compounds Containing Platinum

Cisplatin

Pt(NH₃)₂Cl₂

Platinum(IV) Chloride

PtCl₄

More Transition Metal

21 Sc Scandium 22 Ti Titanium 23 V Vanadium 24 Cr Chromium 25 Mn Manganese 26 Fe Iron 27 Co Cobalt 28 Ni Nickel 29 Cu Copper 30 Zn Zinc

Frequently Asked Questions

What is Platinum?
Platinum (Pt) is a chemical element with atomic number 78. It is a solid at standard temperature and pressure, classified as a transition metal.
What are the key properties of Platinum?
Platinum has an atomic mass of 195.08 u.
What is the electron configuration of Platinum?
The electron configuration of Platinum is [Xe] 4f14 5d9 6s1. It is in the d-block of the periodic table.
What is the electronegativity of Platinum?
Platinum has an electronegativity of 2.28 on the Pauling scale.