Name: Radon

Atomic Symbol and Mass Number: Rn [86]

Electron Configuration: [Xe] 4f14 5d10 6s2 6p6

Atomic Radii: 134 pm

Electron Affinity: 0 kJ mol‑1

Oxidation States: 6, 2, 0

Electronegativity Value: 2.2

Elemental Group: Noble Gas

Uses and Properties:

• Radon is a colorless, odorless gas with a boiling point of -61.8°C (-79.2°F) . Its density is 9.72 grams per liter, making it about seven times as dense as air.

• It is the densest gas known. Radon dissolves in water and becomes a clear, colorless liquid below its boiling point.

• It is chemically inert, but radioactive.

• Radon decays into radioactive polonium and alpha particles. This emitted radiation made radon useful in cancer therapy.

• Radon was used in some hospitals to treat tumours by sealing the gas in minute tubes, and implanting these into the tumour, treating the disease.

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Lewis Diagram: