Chemical Elements.com - Radon (Rn)

“Basic Information Name: Radon Symbol: Rn Atomic Number: 86 Atomic Mass: (222.0) amu Melting Point: -71.0 °C (202.15 K, -95.8 °F) Boiling Point: -61.8 °C (211.35 K, -79.24 °F) Number of Protons/Electrons: 86 Number of Neutrons: 136 Classification: Noble Gas Crystal Structure: Cubic Density @ 293 K...” (from the page’s text)

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