Name: Platinum

Atomic Symbol and Mass Number:Pt [78]

Electron Configuration: [Xe] 4f    5d    6s

Atomic Radii: 139 pm

Electron Affinity: 205.3 kJ mol‑1

Oxidation States:+6,+5,+4,+3,+2,+1, -1, -2, -3

Electronegativity Value: 2.28

Elemental Group: Transition Metal

Uses and Properties:

• Physically, platinum is heavy, soft, and ductile and has a fairly high melting point (~1770°C or 3220°F).

• Chemically, it's often described as a noble metal because it is so unreactive.

• Platinum is used in jewelry, decoration and dental work.

• The metal and its alloys are also used for electrical contacts, fine resistance wires and medical or laboratory instruments.

• An alloy of platinum and cobalt is used to produce strong permanent magnets.

​

Lewis Diagram: