For instance, carbon, with six protons, remains a carbon atom irrespective of how many neutrons it has neutron. The atomic number serves as the unique identifier for each element. Modern periodic table is arranged so that all elements have an increasing atomic n ...
Atomic Number: 86 · Atomic Weight: 222 · Melting Point: 202 K (-71°C or -96°F) · Boiling Point: 211.45 K (-61.7°C or -79.1°F) · Density: 0.00973 grams per cubic centimeter · Phase at Room Temperature: Gas · Element Classification: Non-metal · Period Number: 6 · Group Number: 18 · Group Name: Noble Gas · Special Notes: Radioactive · What's in a name? Named for the element Radium. Say what? Radon is pronounced as RAY-don. History and Uses:
Radon ; Radon (pronunciation: RAY-don) is an odorless, radioactive element that belongs to the family of noble gases and is represented by the chemical symbol Rn [1, 2] . It is colorless at room temperatures, but becomes phosphorescent when cooled below its freezing temperature and gradually turns into orange-red when the temperature is further lowered to the boiling point of liquid air [4]. There are more than 35 radioactive isotopes of radon, ranging from 195Rn-229Rn, out of which 222 Rn is th...
85 Radon Rn 86 Francium Fr 87 Radium Ra 88 Actinium Ac 89 Thorium Th 90 Protactinium Pa 91... guidelines for the nomenclature of elements with atomic number greater than 100, the alternate...
n. Symbol Rn ; (ˈreɪdɒn) ; (ˈreɪ dɒn) n. Symbol Rn A colorless, odorless, radioactive element that is a noble gas. It is produced by the radioactive decay of radium and occurs in minute amounts in soil, rocks, and the air near the ground. Radon is used as a source of radiation for the treatment of cancer and other diseases. Its most stable isotope has a half-life of about four days. Atomic number 86. See Periodic Table.
davidf / Getty Images Atomic Number: 86 Symbol: Rn Atomic Weight: 222.0176 Discovery... Other suggested names for radon included radium emanation, niton, extadio, exthorio, exactinio, akton...
Overview ; Melting Point-71 °C · Boiling Point-61.7 °C · PhaseGas · Melting Point-71 °C · Boiling Point-61.7 °C · Absolute Melting Point202 K · Absolute Boiling Point211.3 K · Critical Pressure6.28 MPa (61.98 Atm) · Critical Temperature377 K · Heat of Fusion3 kJ/mol · Heat of Vaporization17 kJ/mol
radon [ra´don] a chemical element, atomic number 86, atomic weight 222, symbol Rn. (See... neutrons for research. Its most stable isotope is Rn-222 with a half-life of 3.82 days. A natural...
For instance, the radii generally decrease rightward along... Atomic radii up to zinc (30) atomic number symbol name... Rn radon 120 [5] 220 [4] 142 133 [6] 87 Fr francium 348 [4] 88 Ra...
Elements having the same atomic number are chemically indistinguishable, even if the mass numbers are different. They are called "isotopes". For example, polonium-218, polonium-214, and...