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General Information and Atomic Structure

Radon

Symbol – Rn

Atomic # - 86

Atomic Mass – 222

# of Electrons and Protons – 86, 86
Most Common Isotope – Rn-222
# of Neutrons in Most Common Isotope - 136

Physical Properties

State of matter at room temperature – Gas

Melting Point - −71.15 °C

Boiling Point - 61.85 °C

Density - 9.73 g/L

Abundance in Earth’s Crust - 4 x10^13 milligrams per kilogram
Background

Scientist Who Discovered the Element - Friedrich Ernst Dorn

Year Discovered – 1900
Name Origin – Came from “radium”, was originally called “niton”, which means “shining”
Chemical Family – Noble Gas
Common Uses – Radiation treatment for Cancer, Hydrologic research that studies the interaction between ground water and streams, Predicting earthquakes.
Chemical Properties
Elements that React with the Element – Fluorine and Oxygen, otherwise isn’t very reactive
Compunds of the Element - Radon difluoride