what is radioactivity? Name three types of radiations emitted from the nucleus pf an atom during their decay
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areebah
Radioactivity is a phenomenon that occurs regardless of the physical and chemical changes . Radioactivity phenomenon was discovered by henri baquerel who used uranium planted in a medium of lead . That element emitted radiations that were named as alpha particles beta particles and gamma rays respectively .
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kurapati
RADIOACTIVITY MEANS THE EMISSION OF OINIZING RADIATION OR PRATICELS CAUSED BY THE SPONTANEOUS DISINTEGRATION OF ATOMIC NUCLEI.IS CALLED RADIOACTIVITY. AN ATOM GIVEN OFFRADIATION HAS AN UNSTABLE NUCLEUS; IN MANY CASES THIS MEANS IT HAS TOO MANY NEUTRONS. ATOMS RELIEVE THE INSTABILITY BY SPLITTING INTO PIECES OR EMITTING RADIATION ; BECAUSE THIS MAY CHANGE THE NUMBER OF PROTONS IN THE NUCLEUS, MIGHT BECOME A DIFFERENT ELEMENT. FOR EXAMPLE ,URANIUM - 238 EMITS AN ALPHA PRATICLE AND BECOME THORIUM -234 . THE DAUGHTER ATOM MAY ALSO BE RADIOACTIVE ; EACH NEW BECOME A STEP IN A PROCESS THAT END THE STABLITY ATOM
Answers & Comments
Radioactivity phenomenon was discovered by henri baquerel who used uranium planted in a medium of lead . That element emitted radiations that were named as alpha particles beta particles and gamma rays respectively .
AN ATOM GIVEN OFFRADIATION HAS AN UNSTABLE NUCLEUS; IN MANY CASES THIS MEANS IT HAS TOO MANY NEUTRONS.
ATOMS RELIEVE THE INSTABILITY BY SPLITTING INTO PIECES OR EMITTING RADIATION ; BECAUSE THIS MAY CHANGE THE NUMBER OF PROTONS IN THE NUCLEUS, MIGHT BECOME A DIFFERENT ELEMENT. FOR EXAMPLE ,URANIUM - 238 EMITS AN ALPHA PRATICLE AND BECOME THORIUM -234 . THE DAUGHTER ATOM MAY ALSO BE RADIOACTIVE ; EACH NEW BECOME A STEP IN A PROCESS THAT END THE STABLITY ATOM