what are radioactive elements
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Hey there!! So here is your answer.
Radioactive element - An element subject to spontaneous degeneration of its nucleus accompanied by the emission of alpha particles, beta particles, or gamma rays. All elements with atomic numbers greater than 83 are radioactive. Naturally occurring radioactive elements include radium, thorium, and uranium.
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satender532:
what rre noble gases
these are the inert gases
they do not react with any chemical
group 18 in periodic table contains all the noble gases
example helium argon neon krypton xenon radon etc
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An element subjected to spontaneous degeneration of its nucleus accompanied by the emmision of alpha particles,or gamma rays.All elements with atomic no. greater than 83 are naturally occurring radioactive elements include radium,thorium,and uranium....
what are noble gases
noble gas,any of the seven chemical elements that make up group 1 of the periodic table..The elements are He,Ne,Ar,Kr,Xe,Rn,Og.The noble gases are colurless, odourless, tasteless,non-flammable gases
please you gives notes of organic chemistry chapter
okyy....but how I send pics of chemistry notes
photos se
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