radioactivité définition simple

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{ bidder: 'triplelift', params: { inventoryCode: 'Cambridge_SR' }}, {code: 'ad_btmslot_a', pubstack: { adUnitName: 'cdo_btmslot', adUnitPath: '/2863368/btmslot' }, mediaTypes: { banner: { sizes: [[300, 250]] } }, priceGranularity: customGranularity, { bidder: 'appnexus', params: { placementId: '11654149' }}, Définition radioactif dans le dictionnaire de définitions Reverso, synonymes, voir aussi 'radio-actif',radiatif',radioactive',radio-active', expressions, conjugaison, exemples Définition Simple. Add the power of Cambridge Dictionary to your website using our free search box widgets. { bidder: 'onemobile', params: { dcn: '8a9690ab01717182962182bb50ce0007', pos: 'cdo_btmslot_mobile_flex' }}, {code: 'ad_topslot_b', pubstack: { adUnitName: 'cdo_topslot', adUnitPath: '/2863368/topslot' }, mediaTypes: { banner: { sizes: [[728, 90]] } }, {code: 'ad_btmslot_a', pubstack: { adUnitName: 'cdo_btmslot', adUnitPath: '/2863368/btmslot' }, mediaTypes: { banner: { sizes: [[300, 250], [320, 50], [300, 50]] } }, iasLog("__tcfapi useractioncomplete or tcloaded ", tcData, success); { bidder: 'pubmatic', params: { publisherId: '158679', adSlot: 'cdo_rightslot2' }}]}]; Les effets de la radioactivité sur l’être humain. },{ bids: [{ bidder: 'rubicon', params: { accountId: '17282', siteId: '162036', zoneId: '776130', position: 'btf' }}, { bidder: 'appnexus', params: { placementId: '11654208' }}, { bidder: 'openx', params: { unit: '539971066', delDomain: 'idm-d.openx.net' }}, bids: [{ bidder: 'rubicon', params: { accountId: '17282', siteId: '162036', zoneId: '776140', position: 'atf' }}, }], { bidder: 'pubmatic', params: { publisherId: '158679', adSlot: 'cdo_rightslot' }}]}, Publicité Radioactivité naturelle. iasLog("exclusion label : lcp"); How do you use radioactive in a sentence? { bidder: 'openx', params: { unit: '539971063', delDomain: 'idm-d.openx.net' }}, Radioactivité : définition, synonymes, citations, traduction dans le dictionnaire de la langue française. storage: { { bidder: 'sovrn', params: { tagid: '387232' }}, { bidder: 'triplelift', params: { inventoryCode: 'Cambridge_MidArticle' }}, }); params: { { bidder: 'criteo', params: { networkId: 7100, publisherSubId: 'cdo_btmslot' }}, { bidder: 'openx', params: { unit: '541042770', delDomain: 'idm-d.openx.net' }}, dfpSlots['btmslot_a'] = googletag.defineSlot('/2863368/btmslot', [[300, 250], 'fluid'], 'ad_btmslot_a').defineSizeMapping(mapping_btmslot_a).setTargeting('sri', '0').setTargeting('vp', 'btm').setTargeting('hp', 'center').addService(googletag.pubads()); La radioactivité est une désintégration naturelle d’un noyau radioactif à un noyau fils plus stable avec émission d’une particule. { bidder: 'sovrn', params: { tagid: '346688' }}, Chaque noyau va se transformer en noyau stable en une ou plusieurs desintégration(s) spontanée(s). bids: [{ bidder: 'rubicon', params: { accountId: '17282', siteId: '162036', zoneId: '776156', position: 'atf' }}, { bidder: 'ix', params: { siteId: '195451', size: [300, 250] }}, { bidder: 'onemobile', params: { dcn: '8a969411017171829a5c82bb4deb000b', pos: 'cdo_leftslot_160x600' }}, { bidder: 'ix', params: { siteId: '195464', size: [160, 600] }}, Radioactivité . { bidder: 'ix', params: { siteId: '195451', size: [320, 50] }}, { bidder: 'ix', params: { siteId: '195467', size: [320, 50] }}, bids: [{ bidder: 'rubicon', params: { accountId: '17282', siteId: '162036', zoneId: '776160', position: 'atf' }}, ga('create', 'UA-31379-3',{cookieDomain:'dictionary.cambridge.org',siteSpeedSampleRate: 10}); The strength of ionizing radiation depends on the energy of the individual particles or waves, and not a function … { bidder: 'onemobile', params: { dcn: '8a969411017171829a5c82bb4deb000b', pos: 'cdo_leftslot_160x600' }}, dfpSlots['rightslot'] = googletag.defineSlot('/2863368/rightslot', [[300, 250]], 'ad_rightslot').defineSizeMapping(mapping_rightslot).setTargeting('sri', '0').setTargeting('vp', 'mid').setTargeting('hp', 'right').addService(googletag.pubads()); "login": { userIds: [{ Radioactive definition: Something that is radioactive contains a substance that produces energy in the form of... | Meaning, pronunciation, translations and examples 'min': 31, In other words, a nucleus of a radionuclide has no “memory”. 1 : of, caused by, or exhibiting radioactivity radioactive isotopes Radon is an odorless, colorless gas that arises naturally from the ground because of the decay of radioactive elements commonly found in … Doc. partner: "uarus31" { bidder: 'triplelift', params: { inventoryCode: 'Cambridge_HDX' }}, { bidder: 'openx', params: { unit: '539971080', delDomain: 'idm-d.openx.net' }}, { bidder: 'ix', params: { siteId: '555365', size: [300, 250] }}, "sign-up": "https://dictionary.cambridge.org/auth/signup?rid=READER_ID", { bidder: 'appnexus', params: { placementId: '11653860' }}, { bidder: 'pubmatic', params: { publisherId: '158679', adSlot: 'cdo_rightslot' }}]}, iasLog("__tcfapi removeEventListener", success); { bidder: 'sovrn', params: { tagid: '446382' }}, Often, large atoms decay by emitting an energetic alpha particle. { Définition de radioactivité: c'est l'émission spontanée de particules ou de rayonnement, ou les deux en même temps. Nuclear decay (Radioactive decay) occurs when an unstable atom loses energy by emitting ionizing radiation. { bidder: 'triplelift', params: { inventoryCode: 'Cambridge_MidArticle' }}, { bidder: 'ix', params: { siteId: '555365', size: [160, 600] }}, { bidder: 'criteo', params: { networkId: 7100, publisherSubId: 'cdo_leftslot' }}, { bidder: 'ix', params: { siteId: '555365', size: [120, 600] }}, iasLog("exclusion label : resp"); Un atome est composé d'un noyau et de plusieurs électrons qui tournent autour de celui-ci. { bidder: 'appnexus', params: { placementId: '11653860' }}, googletag.pubads().setTargeting("cdo_pc", "dictionary"); bidderSequence: "fixed" dfpSlots['leftslot'] = googletag.defineSlot('/2863368/leftslot', [[120, 600], [160, 600]], 'ad_leftslot').defineSizeMapping(mapping_leftslot).setTargeting('sri', '0').setTargeting('vp', 'top').setTargeting('hp', 'left').addService(googletag.pubads()); { bidder: 'triplelift', params: { inventoryCode: 'Cambridge_Billboard' }}, if(success && (tcData.eventStatus === 'useractioncomplete' || tcData.eventStatus === 'tcloaded')) { "error": true, Déchet radioactif . radioactive: [ ra″de-o-ak´tiv ] characterized by radioactivity. { bidder: 'appnexus', params: { placementId: '11654157' }}, Réduire la taille du texte Augmenter la taille du texte Imprimer cette page Envoyer par e-mail. { bidder: 'ix', params: { siteId: '555365', size: [160, 600] }}, timeout: 8000, { bidder: 'criteo', params: { networkId: 7100, publisherSubId: 'cdo_btmslot' }}, const customGranularity = { Certains noyaux atomiques instables sont la source de ces rayonnements. noun Physics, Chemistry. pid: '94' Radioactivité naturelle est une définition du dictionnaire environnement et développement durable. All matter is made of chemical elements, and elements are made of atoms. 'increment': 0.5, These particles and radiation come from the decay of certain nuclides that form them. They disintegrate due to a fix in their internal structure. { bidder: 'appnexus', params: { placementId: '11653860' }}, { bidder: 'ix', params: { siteId: '555365', size: [120, 600] }}, Isotope. Car cela n'est plus vrai pour les atomes les plus lourds, qui se trouvent en bas du tableau périodique des éléments. {code: 'ad_rightslot', pubstack: { adUnitName: 'cdo_rightslot', adUnitPath: '/2863368/rightslot' }, mediaTypes: { banner: { sizes: [[300, 250]] } }, params: { { bidder: 'pubmatic', params: { publisherId: '158679', adSlot: 'cdo_topslot' }}]}, Définition. { bidder: 'sovrn', params: { tagid: '346698' }}, { bidder: 'ix', params: { siteId: '195467', size: [300, 50] }}, } { bidder: 'ix', params: { siteId: '195451', size: [300, 250] }}, However, the particles cause extreme damage of materials that they stop in by displacing atoms as they slow. var mapping_houseslot_a = googletag.sizeMapping().addSize([963, 0], [300, 250]).addSize([0, 0], []).build(); }; {code: 'ad_rightslot2', pubstack: { adUnitName: 'cdo_rightslot2', adUnitPath: '/2863368/rightslot2' }, mediaTypes: { banner: { sizes: [[300, 250], [120, 600], [160, 600]] } }, Plus de 44800 synonymes disponibles sur dictionnaire-synonyme.com. { bidder: 'ix', params: { siteId: '194852', size: [300, 250] }}, defaultGdprScope: true { bidder: 'sovrn', params: { tagid: '387233' }}, Named alpha because they were the first to be discovered, these particles are made up of 2 protons and 2 neutrons: the helium nucleus. It is also known as radioactive decay, nuclear decay, nuclear disintegration, or radioactive disintegration. }; Des atomes possédant le même numéro atomique, (même nombre de protons) mais de masse atomique différente (nombre différent de neutrons) sont appelés isotopes. { bidder: 'ix', params: { siteId: '195466', size: [728, 90] }}, { bidder: 'openx', params: { unit: '539971063', delDomain: 'idm-d.openx.net' }}, var mapping_topslot_a = googletag.sizeMapping().addSize([746, 0], []).addSize([0, 550], [[300, 250]]).addSize([0, 0], [[300, 50], [320, 50], [320, 100]]).build(); iasLog("criterion : sfr = cdo_dict_english"); bids: [{ bidder: 'rubicon', params: { accountId: '17282', siteId: '162036', zoneId: '776130', position: 'btf' }}, American Heritage® Dictionary of the English Language, Fifth Edition. if(!isPlusPopupShown()) googletag.pubads().setTargeting("cdo_ei", "radioactive"); Definition - What does Radioactive mean? Les rayonnements émis par les radionucléides sont dits ionisants car ils peuvent arracher des électrons aux atomes de la matière qu'ils rencontrent et donc en perturber les propriétés chimiques. Learn more in the Cambridge French-English Dictionary. { bidder: 'sovrn', params: { tagid: '346693' }}, { bidder: 'ix', params: { siteId: '195466', size: [728, 90] }}, La radioactivitat natural és la radioactivitat que es presenta en la naturalesa a causa de les cadenes d'elements radioactius naturals i d'origen no antropogènic. { bidder: 'onemobile', params: { dcn: '8a9690ab01717182962182bb50ce0007', pos: 'cdo_btmslot_mobile_flex' }}, Étant donné que c… iasLog("exclusion label : wprod"); { bidder: 'appnexus', params: { placementId: '11654156' }}, googletag.enableServices(); Aller à : navigation, rechercher La radioactivité est un rayonnement radioactif, généralement généré

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