Symbol: RaAtomic Number: 88Atomic Weight: 226Classification: Alkaline earth metalPhase at Room Temperature: SolidDensity: 5.5 grams per cm cubedMelting Point: 700°C, 1292°FBoiling Point: 1140°C, 2084°FDiscovered by: Marie and also Pierre Curie in 1898Radium is the sixth facet of the 2nd column in the routine table. It is the heaviest of the alkaline planet metals. Radium atoms have 88 electrons and also 88 protons v 2 valence electrons in the external shell.Characteristics and PropertiesUnder standard problems radium is a silvery metal. It is an extremely radioactive emitting irradiate rays that cause it to glow in the dark. When exposed come the wait it will certainly quickly form a black coating by reacting through the nitrogen in the air. It likewise reacts readily with various other elements and also substances including water.The radiation provided off by radium is incredibly dangerous. The is end one million times together radioactive as uranium. Overexposure to radium can cause cancer and eventually death. Marie Curie, among the initial scientists who functioned with radium, eventually passed away of overexposure come radiation.Where is it uncovered on Earth?Radium is very rare facet on Earth. The is found in uranium ores. The takes around 7 loads of ore simply to develop a solitary gram the radium. It is developed as a byproduct the uranium mining. Because it is for this reason dangerous, just a few ounces are created each year.How is radium used today?When radium was an initial discovered it had a number of uses. The was supplied in paints that would glow. These paints were used on clocks, watches, and also instruments so civilization could view them in the dark. Other uses consisted of cancer treatment, toothpaste, and also research experiments.Today radium does not have any major industrial uses because of the risk of that is radioactivity.

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How was it discovered?
Marie Curie and also her husband Pierre found the facet while trying out with the mineral dubbed pitchblende in 1898. It took one more 12 years for Marie Curie to ultimately isolate metallic radium in 1910.Where did radium get its name?The name comes from the Latin native "radius" which means ray. They named it after ~ the rays the were emitted indigenous the element.IsotopesThere are 4 naturally emerging isotopes of radium. The many abundant is radium-226 which has actually a half-life that 1600 years. None of the isotopes room stable. They are all produced by the decay of the elements uranium and thorium.Interesting Facts about RadiumThe element "curium" is named for the discoverers of radium.Marie Curie likewise discovered the element polonium while exploring with pitchblende.Before the threats of radiation to be understood, radium was referred to as the wonder metal since it gave off heat and light.Radium is component of a degeneration chain wherein it will slowly decay into radon, climate polonium, and finally lead.The unit for measuring radioactivity is referred to as the "curie" after scientists Marie and Pierre Curie.
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