Symbol: RaAtomic Number: 88Atomic Weight: 226Classification: Alkaline earth metalPhase at Room Temperature: SolidDensity: 5.5 grams per centimeter cubedMelting Point: 700°C, 1292°FBoiling Point: 1140°C, 2084°FDiscovered by: Marie and Pierre Curie in 1898Radium is the sixth aspect of the second column in the periodic table. It is the heaviest of the alkaline earth metals. Radium atoms have 88 electrons and also 88 protons through 2 valence electron in the outer shell.Characteristics and PropertiesUnder standard conditions radium is a silvery metal. The is an extremely radioactive emitting irradiate rays that cause it to glow in the dark. When exposed to the air it will certainly quickly type a black color coating through reacting with the nitrogen in the air. It likewise reacts readily with other elements and substances including water.The radiation offered off by radium is extremely dangerous. It is over one million times as radioactive as uranium. Overexposure to radium can reason cancer and eventually death. Marie Curie, among the original scientists who worked with radium, eventually died of overexposure to radiation.Where is it found on Earth?Radium is very rare element on Earth. That is found in uranium ores. That takes about 7 lots of ore just to produce a solitary gram that radium. It is produced as a byproduct of uranium mining. Because it is so dangerous, only a few ounces are created each year.How is radium offered today?When radium was very first discovered it had a variety of uses. It was supplied in paints that would certainly glow. These paints were offered on clocks, watches, and instruments so civilization could view them in the dark. Various other uses consisted of cancer treatment, toothpaste, and research experiments.Today radium go not have actually any major industrial uses due to the hazard of that is radioactivity.

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How was it discovered?
Marie Curie and also her husband Pierre uncovered the element while trying out with the mineral referred to as pitchblende in 1898. It took one more 12 years for Marie Curie to ultimately isolate metallic radium in 1910.Where walk radium get its name?The name originates from the Latin word "radius" which method ray. They called it ~ the rays that were emitted indigenous the element.IsotopesThere are four naturally developing isotopes the radium. The most abundant is radium-226 which has actually a half-life that 1600 years. None of the isotopes are stable. They are all produced by the degeneration of the elements uranium and thorium.Interesting Facts around RadiumThe aspect "curium" is named for the discoverers of radium.Marie Curie also discovered the aspect polonium while experimenting with pitchblende.Before the threats of radiation were understood, radium was dubbed the wonder metal because it offered off heat and also light.Radium is part of a degeneration chain wherein it will slowly decay into radon, then polonium, and also finally lead.The unit because that measuring radiation is called the "curie" after researchers Marie and also Pierre Curie.
More on the Elements and the regular TableElementsPeriodic Table
Alkali MetalsLithiumSodiumPotassiumAlkaline planet MetalsBerylliumMagnesiumCalciumRadiumTransition MetalsScandiumTitaniumVanadiumChromiumManganeseIronCobaltNickelCopperZincSilverPlatinumGoldMercuryPost-transition MetalsAluminumGalliumTinLeadMetalloidsBoronSiliconGermaniumArsenicNonmetalsHydrogenCarbonNitrogenOxygenPhosphorusSulfurHalogensFluorineChlorineIodineNoble GasesHeliumNeonArgonLanthanides and also ActinidesUraniumPlutonium
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