radon
English
| Chemical element | |
|---|---|
| Rn | |
| Previous: astatine (At) | |
| Next: francium (Fr) | |
Etymology
Contraction of radium emanation, since the element appears in the radioactive decay of radium.
Pronunciation
- enPR: rā'dŏn, IPA(key): /ˈɹeɪdɒn/
Audio (Southern England) (file)
Noun
radon (uncountable)
- The chemical element (symbol Rn, formerly Ro) with atomic number 86. It is an odorless, colorless, chemically inert but radioactive noble gas.
- Radon-222 (22286Rn), the most stable isotope of this element, .
Usage notes
The isotopes 222Rn, 220Rn, and 219Rn were discovered independently, and were called radon (Rn), thoron (Tn), and actinon (An) respectively. In 1957, it was finally decided that the name radon should refer to the element in general, regardless of isotope. Thoron still survives as a name for 220Rn today; actinon is mostly obsolete, because 219Rn is short-lived.[1]
Synonyms
a chemical element
radon-222; an isotope of radon
Derived terms
- eka-radon
- radon difluoride
- radon fluoride
Related terms
Translations
chemical element
|
- The translations below need to be checked and inserted above into the appropriate translation tables. See instructions at Wiktionary:Entry layout § Translations.
See also
- actinon
- radium emanation
References
- Radon on the British Royal Society of Chemistry's online periodic table
- “Recalling radon's recognition”, in Nature Chemistry, volume 5, issue 9, 22 August 2013, Bibcode: 2013NatCh...5..804T, DOI:, PMID 23965684, pages 804
Afrikaans
| Chemical element | |
|---|---|
| Rn | |
| Previous: astaat (At) | |
| Next: frankium (Fr) | |
Pronunciation
Audio (file) - Hyphenation: ra‧don
Basque
Pronunciation
- IPA(key): /radon/, [ra.ð̞õ̞n]
Declension
| Declension of radon (inanimate, singular only, ending in consonant) | |||
|---|---|---|---|
| indefinite | singular | plural | |
| absolutive | radon | radona | — |
| ergative | — | radonak | — |
| dative | — | radonari | — |
| genitive | — | radonaren | — |
| comitative | — | radonarekin | — |
| causative | — | radonarengatik | — |
| benefactive | — | radonarentzat | — |
| instrumental | radonez | radonaz | — |
| inessive | — | radonean | — |
| locative | — | — | — |
| allative | — | — | — |
| terminative | — | — | — |
| directive | — | — | — |
| destinative | — | — | — |
| ablative | — | — | — |
| partitive | radonik | — | — |
| prolative | radontzat | — | — |
Further reading
- "radon" in Euskaltzaindiaren Hiztegia [Dictionary of the Basque Academy], euskaltzaindia.eus
Crimean Tatar
Declension
Declension of radon
| nominative | radon |
|---|---|
| genitive | radonnıñ |
| dative | radonğa |
| accusative | radonnı |
| locative | radonda |
| ablative | radondan |
Czech
Danish
Esperanto
Finnish
Pronunciation
- IPA(key): /ˈrɑ(ː)don/, [ˈrɑ(ː)do̞n]
- Rhymes: -ɑdon
- Syllabification(key): ra‧don
Declension
| Inflection of radon (Kotus type 6/paperi, no gradation) | |||
|---|---|---|---|
| nominative | radon | radonit | |
| genitive | radonin | radonien radoneiden radoneitten | |
| partitive | radonia | radoneita radoneja | |
| illative | radoniin | radoneihin | |
| singular | plural | ||
| nominative | radon | radonit | |
| accusative | nom. | radon | radonit |
| gen. | radonin | ||
| genitive | radonin | radonien radoneiden radoneitten | |
| partitive | radonia | radoneita radoneja | |
| inessive | radonissa | radoneissa | |
| elative | radonista | radoneista | |
| illative | radoniin | radoneihin | |
| adessive | radonilla | radoneilla | |
| ablative | radonilta | radoneilta | |
| allative | radonille | radoneille | |
| essive | radonina | radoneina | |
| translative | radoniksi | radoneiksi | |
| instructive | — | radonein | |
| abessive | radonitta | radoneitta | |
| comitative | — | radoneineen | |
| Possessive forms of radon (type paperi) | ||
|---|---|---|
| possessor | singular | plural |
| 1st person | radonini | radonimme |
| 2nd person | radonisi | radoninne |
| 3rd person | radoninsa | |
See also
French
Pronunciation
- IPA(key): /ʁa.dɔ̃/
Audio (file) - Rhymes: -ɔ̃
Further reading
- “radon”, in Trésor de la langue française informatisé [Digitized Treasury of the French Language], 2012.
Galician
Hungarian
| Chemical element | |
|---|---|
| Rn | |
| Previous: asztácium (At) | |
| Next: francium (Fr) | |
Pronunciation
- IPA(key): [ˈrɒdon]
- Hyphenation: ra‧don
- Rhymes: -on
Declension
| Inflection (stem in -o-, back harmony) | ||
|---|---|---|
| singular | plural | |
| nominative | radon | radonok |
| accusative | radont | radonokat |
| dative | radonnak | radonoknak |
| instrumental | radonnal | radonokkal |
| causal-final | radonért | radonokért |
| translative | radonná | radonokká |
| terminative | radonig | radonokig |
| essive-formal | radonként | radonokként |
| essive-modal | — | — |
| inessive | radonban | radonokban |
| superessive | radonon | radonokon |
| adessive | radonnál | radonoknál |
| illative | radonba | radonokba |
| sublative | radonra | radonokra |
| allative | radonhoz | radonokhoz |
| elative | radonból | radonokból |
| delative | radonról | radonokról |
| ablative | radontól | radonoktól |
| non-attributive possessive - singular |
radoné | radonoké |
| non-attributive possessive - plural |
radonéi | radonokéi |
| Possessive forms of radon | ||
|---|---|---|
| possessor | single possession | multiple possessions |
| 1st person sing. | radonom | radonjaim |
| 2nd person sing. | radonod | radonjaid |
| 3rd person sing. | radonja | radonjai |
| 1st person plural | radonunk | radonjaink |
| 2nd person plural | radonotok | radonjaitok |
| 3rd person plural | radonjuk | radonjaik |
Icelandic
| Chemical element | |
|---|---|
| Rn | |
| Previous: astat (As) | |
| Next: fransín (Fr) | |
Declension
declension of radon
| n-s | singular | |
|---|---|---|
| indefinite | definite | |
| nominative | radon | radonið |
| accusative | radon | radonið |
| dative | radoni | radoninu |
| genitive | radons | radonsins |
Italian
| Chemical element | |
|---|---|
| Rn | |
| Previous: astato (At) | |
| Next: francio (Fr) | |
Pronunciation
- IPA(key): /ˈra.don/
- Rhymes: -adon
- Hyphenation: rà‧don
Latin
Pronunciation
- (Classical) IPA(key): /ˈra.don/, [ˈräd̪ɔn]
- (Ecclesiastical) IPA(key): /ˈra.don/, [ˈräːd̪on]
Malay
| Chemical element | |
|---|---|
| Rn | |
| Previous: astatin (At) | |
| Next: fransium (Fr) | |
Pronunciation
- IPA(key): [radɔn], [redɔn]
- Rhymes: -dɔn, -ɔn
Maltese
| Chemical element | |
|---|---|
| Rn | |
| Previous: astat (At) | |
| Next: franċju (Fr) | |
Pronunciation
- IPA(key): /ˈraː.dɔn/
Polish
| Chemical element | |
|---|---|
| Rn | |
| Previous: astat (At) | |
| Next: frans (Fr) | |
Pronunciation
- IPA(key): /ˈra.dɔn/
Audio (file) - Rhymes: -adɔn
- Syllabification: ra‧don
Declension
Romanian
Declension
declension of radon (singular only)
| singular | ||
|---|---|---|
| n gender | indefinite articulation | definite articulation |
| nominative/accusative | (un) radon | radonul |
| genitive/dative | (unui) radon | radonului |
| vocative | radonule | |
Slovene
| Chemical element | |
|---|---|
| Rn | |
| Previous: astát (At) | |
| Next: fráncij (Fr) | |
Pronunciation
- IPA(key): /ráːdɔn/, /radóːn/
Inflection
| Masculine inan., hard o-stem | ||
|---|---|---|
| nominative | rádon | |
| genitive | rádona | |
| singular | ||
| nominative (imenovȃlnik) |
rádon | |
| genitive (rodȋlnik) |
— | |
| dative (dajȃlnik) |
— | |
| accusative (tožȋlnik) |
— | |
| locative (mẹ̑stnik) |
rádonu | |
| instrumental (orọ̑dnik) |
rádonom | |
Further reading
- “radon”, in Slovarji Inštituta za slovenski jezik Frana Ramovša ZRC SAZU, portal Fran
Swedish
| Chemical element | |
|---|---|
| Rn | |
| Previous: astat (At) | |
| Next: francium (Fr) | |
Pronunciation
- IPA(key): /raˈdoːn/
Welsh
| Chemical element | |
|---|---|
| Rn | |
| Previous: astatin (At) | |
| Next: ffranciwm (Fr) | |
Pronunciation
- (North Wales) IPA(key): /ˈradɔn/
- (South Wales) IPA(key): /ˈra(ː)dɔn/
- Rhymes: -adon
References
- R. J. Thomas, G. A. Bevan, P. J. Donovan, A. Hawke et al., editors (1950–present), “radon”, in Geiriadur Prifysgol Cymru Online (in Welsh), University of Wales Centre for Advanced Welsh & Celtic Studies
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