Name: Ruthenium

Atomic Symbol and Mass Number: Ru [44]

Electron Configuration: [Kr] 4d   5s

Atomic Radii: 134 pm

Electron Affinity: 101.3 kJ mol‑1

Oxidation States: 0 to +8, and −2

Electronegativity Value: 2.2

Elemental Group: Transition Metals

Uses and Properties:

• Ruthenium compounds can be used in solar cells, which turn light energy into electrical energy.

• Ruthenium is one of the most effective hardeners for platinum and palladium, and is alloyed with these metals to make electrical contacts for severe wear resistance.

• Often used in jewelry as an alloy with platinum

• It has a melting point of 2607 K and a boiling point of about 4423 K

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Lewis Diagram: