RADON CHEMICAL ELEMENT SYMBOL ATOMIC NUMBER RADIOACTIVE ODORLESS TASTELESS NOBLE GAS NATURALLY DECAY PRODUCT RADIUM STABLE ISOTOPE REMAINS GAS NORMAL CONDITIONS THE ONLY STABLE ISOTOPES HEALTH HAZARD RADIOACTIVITY INTENSE HINDERED CHEMICAL AS ONE STEP IN THE NORMAL RADIOACTIVE DECAY CHAIN THORIUM URANIUM DECAY LEAD COMMON ELEMENTS EARTH THE EARTH NATURALLY OCCURRING ISOTOPES ON THE ORDER OF THEREFORE CONTINUE TENS MILLIONS ALMOST CONCENTRATIONS ITSELF PROGENY DECAY PRODUCTS STICK DUST PARTICLES CONTAMINATED THE LUNG INCREASE RISK LUNG THE OTHER DECAY CHAINS THE MAJORITY THE PUBLIC EXPOSURE IONIZING RADIATION LARGEST INDIVIDUALS BACKGROUND RADIATION VARIABLE LOCATION SHORT RADON GAS NATURAL SOURCES HIGHER NORMAL AREAS BASEMENTS CRAWL SPACES WATER COMES GROUND SPRING WATERS EPIDEMIOLOGICAL STUDIES CLEAR LINK BREATHING HIGH LUNG CANCER CONTAMINANT INDOOR AIR QUALITY THE UNITED STATES ENVIRONMENTAL PROTECTION AGENCY CAUSE CIGARETTE SMOKING CAUSING DEATHS PEOPLE NEVER THE NUMBER ONE HUMAN SENSES STANDARD TEMPERATURE PRESSURE MONATOMIC GAS DENSITY TIMES EARTHS ATMOSPHERE AT SEA GASES ROOM TEMPERATURE NOBLE GASES COOLED BELOW FREEZING POINT EMITS BRILLIANT RADIOLUMINESCENCE FROM YELLOW TO ORANGE TEMPERATURE CONDENSATION RADIATION SOLUBLE LIGHTER ORGANIC LIQUIDS NOBLE CHEMICALLY USEFUL IN PHYSICAL SCIENCES TRACER MEMBER VALENCE INERT OUTER VALENCE SHELL EIGHT MINIMUM ENERGY CONFIGURATION ELECTRONS EXTRACT ONE ELECTRON SHELLS FIRST IONIZATION ENERGY ACCORDANCE PERIODIC TRENDS ELECTRONEGATIVITY ELEMENT ONE PERIOD XENON STABILITY HYDRATE SHOULD ORDER HYDRATES CHLORINE SULFUR DIOXIDE HYDROGEN SULFIDE COST EXPERIMENTAL CHEMICAL RESEARCH PERFORMED REPORTED FLUORIDE OXIDE POWERFUL OXIDIZING AGENTS FLUORINE THUS FORMING RADON DIFLUORIDE ABOVE VOLATILITY THOUGHT POSSIBLE STUDY THE COMPOUND THEORETICAL MOLECULE PREDICT BOND DISTANCE STABLE LESS VOLATILE OCTAHEDRAL PREDICTED ENTHALPY FORMATION DIFLUORIDE THE HIGHER CLAIMED CALCULATED DOUBTFUL WHETHER BELIEVED REACTION OXIDES THE FEW TRIOXIDE CONFIRMED CARBONYL RNCO LINEAR MOLECULAR GEOMETRY THE MOLECULES COUPLING CAGED INSIDE FULLERENE DRUG TUMORS THE EXISTENCE EXIST UNSTABLE COMPOUND BARIUM ANALOGOUS PERXENATE THE INSTABILITY STABILIZATION ALSO KNOWN AS INERT PAIR EFFECT RADIOACTIVE ISOTOPES ATOMIC MASS RANGING TRACE AMOUNT ISOTOPE DAUGHTERS HOUR SECONDS ALPHA RADIATION DERIVED ACTINIUM ACTINON ALPHA EMITTER DECAY SERIES BELONGS TO DECAY CHAIN MARGINAL MEANING INDICATIVE INITIAL GOES SEQUENCE ALPHA DECAY ALPHA BETA DECAY BETA LONGER EQUILIBRIUM FACTOR THE RATIO ACTIVITY BIOLOGICAL EFFECTS CLOSED VOLUME CONCENTRATION REACHED RATE EQUAL THE DECAY CLOSE PARENT ENOUGH COUPLE CONDITIONS LEVEL MEASURE EXPLANATION ALWAYS FRACTION FOR EACH TAKES TO COME ENVIRONMENT ACCUMULATION OF DUST PERIODS OVERALL ELECTROSTATIC CHARGE ATTACHMENT THE ATMOSPHERE LESS THAN ONE LOWERED CIRCULATION AIR FILTRATION AIRBORNE CIGARETTE HUMAN HEALTH FIFTH RADIOACTIVE ELEMENT FRIEDRICH ERNST DORN DORN SOME EXPERIMENTS EMANATION PIERRE AND MARIE CURIE ROBERT ERNEST RUTHERFORD MCGILL UNIVERSITY IN MONTREAL VARIATIONS TRYING THORIUM OXIDE RUTHERFORD EMIT POWERS LATIN EMANATIONS CURIES THE DISCOVERY OF SIMILAR NAMES THESE THREE EVENTUALLY THE LIKENESS SPECTRA INERTIA SIR WILLIAM RAMSAY MIGHT ELEMENT RAMSAY DETERMINED FORT EXPRESSION NEW NAME NITON SHINING ACCEPTED THE INTERNATIONAL COMMISSION ATOMIC WEIGHTS THE INTERNATIONAL COMMITTEE CHEMICAL ELEMENTS INTERNATIONAL UNION OF PURE APPLIED CHEMISTRY CHOSE THE NAMES THORON NAME SIMPLY FIRST SYNTHESIZED DANGER REACHING PARACELSUS WASTING DISEASE MALA GEORG AGRICOLA VENTILATION MINES MOUNTAIN THIS CONDITION IDENTIFIED HESSE INVESTIGATION MINERS SCHNEEBERG MAJOR HEALTH THE CONTEXT URANIUM MINING JOACHIMSTHAL REGION BOHEMIA MITIGATION DECADES HEALTH EFFECTS SOUTHWESTERN UNITED STATES EMPLOYED THE EARLY COLD WAR STANDARDS PRESENCE DOCUMENTED BEGINNING THE RESEARCH INITIATED ADDRESS DETERMINANTS THE UNITED PROBLEM PUBLICITY INTENSIFIED INCIDENT ROUTINE MONITORING PENNSYLVANIA NUCLEAR POWER WORKER CONTAMINATION SUBSEQUENTLY DISCUSSIONS REFER TO AVERAGE RATE PRODUCTION MUCH LESS THAN VERSUS DAYS MEASURED BECQUEREL CUBIC METER THE SI DERIVED UNIT UNIT OF MEASUREMENT THE US PICOCURIE LITER DOMESTIC AVERAGE MINING TRADITIONALLY MONTH COMBINATION POTENTIAL EQUIVALENT JOULES LIVING ONE YEAR ATMOSPHERE DEPOSITION RADIOISOTOPE ENVIRONMENTS DETECTED PICOGRAM ATOMS ENTIRE GRAMS RADIOACTIVE DECAY URANIUM ORES PHOSPHATE ROCK IGNEOUS METAMORPHIC ROCKS IN COMMON ROCKS SQUARE MILE SURFACE SOIL DEPTH GLOBAL SOIL PLACE TO PLACE THE OPEN RANGES CAVES AERATED REGULATIONS PERCENTILE UP TO NEARLY GASTEIN HEALING GALLERY MAXIMAL VALUE APPEARS CHAIN URANIUM SERIES THORIUM SERIES BUILDING MATERIALS ALL OVER TRACES PARTICULARLY REGIONS SOILS GRANITE OR SHALE GRANITIC PRONE RARE FAULTS QUICKLY THE DISTANCE AREA SEASON ATMOSPHERIC CONDITIONS METEOROLOGICAL INVERSION LITTLE TOWNS MONTANA MISASA BAD KREUZNACH GERMANY THE COUNTRY JAPAN SPRINGS CLASSIFIED MINERAL WATER MUST MERANO CONTACT VOLATILIZAT