Radium
Radium is a chemical element with symbol Ra and atomic number 88. It is the sixth element in group 2 of the periodic table, also known as the alkaline earth metals. Pure radium is silvery-white, but it readily combines with nitrogen (rather than oxygen) on exposure to air, forming a black surface layer of radium nitride (Ra3N2). All isotopes of radium are highly radioactive, with the most stable isotope being radium-226, which has a half-life of 1600 years and decays into radon gas (specifically the isotope radon-222). When radium decays, ionizing radiation is a product, which can excite fluorescent chemicals and cause radioluminescence.
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Radium
Radium is a chemical element with symbol Ra and atomic number 88. It is the sixth element in group 2 of the periodic table, also known as the alkaline earth metals. Pure radium is silvery-white, but it readily combines with nitrogen (rather than oxygen) on exposure to air, forming a black surface layer of radium nitride (Ra3N2). All isotopes of radium are highly radioactive, with the most stable isotope being radium-226, which has a half-life of 1600 years and decays into radon gas (specifically the isotope radon-222). When radium decays, ionizing radiation is a product, which can excite fluorescent chemicals and cause radioluminescence.
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25بك المحتوى هنا ينقصه الاستشه ...... في كومنز صور وملفات عن: راديوم
@ar
El radio es un elemento químic ...... os y se transmuta dando radón.
@es
Il radio è l'elemento chimico ...... i 1602 anni e decade in radon.
@it
Le radium est l'élément chimiq ...... emps que le mot radioactivité.
@fr
O Rádio (do latim científico r ...... em 1898 na pechblenda/uranita.
@pt
Rad (Ra, łac. radium) – pierwi ...... radius oznaczającego promień.
@pl
Radium (lateinisch radius ‚Str ...... amit zu den Erdalkalimetallen.
@de
Radium is a chemical element w ...... d in radioluminescent devices.
@en
Radium is een scheikundig elem ...... ilverkleurig aardalkalimetaal.
@nl
Ра́дий — элемент главной подгр ...... д полураспада около 1600 лет).
@ru
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Alkaline earth metals
Chemical elements
Period 7 elements
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25بك المحتوى هنا ينقصه الاستشه ...... لكلوريد الراديوم في عام 1910.
@ar
El radio es un elemento químic ...... os y se transmuta dando radón.
@es
Il radio è l'elemento chimico ...... i 1602 anni e decade in radon.
@it
Le radium est l'élément chimiq ...... mme produit de désintégration.
@fr
O Rádio (do latim científico r ...... em 1898 na pechblenda/uranita.
@pt
Rad (Ra, łac. radium) – pierwi ...... radius oznaczającego promień.
@pl
Radium (lateinisch radius ‚Str ...... amit zu den Erdalkalimetallen.
@de
Radium is a chemical element w ...... s and cause radioluminescence.
@en
Radium is een scheikundig elem ...... ilverkleurig aardalkalimetaal.
@nl
Ра́дий — элемент главной подгр ...... д полураспада около 1600 лет).
@ru
label
Rad (pierwiastek)
@pl
Radio (elemento chimico)
@it
Radio (elemento)
@es
Radium
@de
Radium
@en
Radium
@fr
Radium
@nl
Rádio (elemento químico)
@pt
Радий
@ru
راديوم
@ar