Deuterium is an isotope of hydrogen, the first element. Deuterium has one proton and one neutron (two for the tritium). Hydrogen does not have a neutron, only a proton. The chemical symbol for Deuterium is 2H but D is also used often.
Česká (Czech) • English • Deutsch (German) • 日本語 (Japanese) • Français (French) • Polski (Polish) • Suomi (Finnish) • Svenska (Swedish) • Nederlands (Dutch) • Español (Spanish) • Italiano (Italian) • Norsk (Norwegian Bokmål) • Português (Portuguese) • Română (Romanian) • Русский (Russian) • Türkçe (Turkish) • Українська (Ukrainian) • 中文 (Chinese)
العربية (Arabic) • Български (Bulgarian) • Bosanski (Bosnian) • Català (Catalan) • Cymraeg (Welsh) • Dansk (Danish) • Ελληνικά (Greek) • Esperanto • Eesti (Estonian) • Euskara (Basque) • Galego (Galician) • עברית (Hebrew) • हिन्दी (Hindi) • Hrvatski (Croatian) • Magyar (Hungarian) • Ido • Bahasa Indonesia (Indonesian) • Íslenska (Icelandic) • Basa Jawa (Javanese) • 한국어 (Korean) • Latina (Latin) • Lëtzebuergesch (Luxembourgish) • Lietuvių (Lithuanian) • Latviešu (Latvian) • Bahasa Melayu (Malay) • Plattdüütsch (Low Saxon) • Norsk (Norwegian Nynorsk) • فارسی (Persian) • Sicilianu (Sicilian) • Slovenčina (Slovak) • Slovenščina (Slovenian) • Српски (Serbian) • Basa Sunda (Sundanese) • தமிழ் (Tamil) • ไทย (Thai) • Tiếng Việt (Vietnamese)
Afrikaans • Asturianu (Asturian) • Беларуская (Belarusian) • Kaszëbsczi (Kashubian) • Frysk (Western Frisian) • Gaeilge (Irish) • Interlingua • Kurdî (Kurdish) • Kernewek (Cornish) • Māori • Bân-lâm-gú (Southern Min) • Occitan • संस्कृत (Sanskrit) • Scots • Tatarça (Tatar) • اردو (Urdu) Walon (Walloon) • יידיש (Yiddish) • 古文/文言文 (Classical Chinese)
