Yterbium

Izotop	Výskyt	t_1/2	Rr	Er (MeV)	Pr
¹⁶⁶Yb	synt.	56,7 h.	ε	0,304	¹⁶⁶Tm
¹⁶⁸Yb	0,13 %	stabilný s 98 neutrónmi
¹⁶⁹Yb	synt.	32,026 d.	ε	0,909	¹⁶⁹Tm
¹⁷⁰Yb	3,04 %	stabilný s 100 neutrónmi
¹⁷¹Yb	14,28 %	stabilný s 101 neutrónmi
¹⁷²Yb	21,83 %	stabilný s 102 neutrónmi
¹⁷³Yb	16,13 %	stabilný s 103 neutrónmi
¹⁷⁴Yb	31,83 %	stabilný s 104 neutrónmi
¹⁷⁵Yb	synt.	4,185 d.	β^-	0,470	¹⁷⁵Lu
¹⁷⁶Yb	12,76 %	stabilný s 106 neutrónmi
¹⁷⁷Yb	synt.	1,911 h.	β^-	1,399	¹⁷⁷Lu

Commons ponúka multimediálny obsah na tému yterbium.

Chemický portál

Yterbium Ytterbium je chemický prvok v periodickej tabuľke, ktorý má symbol Yb a protónové číslo 70. Patrí medzi lantanoidy.

V zemskej kôre je zastúpený v koncentrácii okolo 2,6 – 3 mg/kg, údaje o jeho obsahu v morskej vode nie sú známe. Vo vesmíre pripadá na jeden atóm yterbia 200 miliárd atómov vodíka.

V prírode sa vyskytuje iba vo forme zlúčením. Neexistujú ani minerály, v ktorých by sa niektoré lantanoidy vyskytovali samostatne, ale vždy ide o zmesové minerály, ktoré obsahujú prakticky všetky prvky tejto skupiny. Medzi najznámejšie patria monazity (Ce, La, Th, Nd, Y)PO₄ a xenotím, chemicky fosforečnany lantanoidov, ďalej bastnäsity (Ce, La, Y)CO₃F– zmesové fluórouhličitany prvkov vzácnych zemín a napríklad minerál euxenit (Y,Ca,Ce,U,Th)(Nb,Ta,Ti)₂O₆.

Veľké ložiská týchto rúd sa nachádzajú v Škandinávii, Spojených štátoch, Číne a Vietname. Významným zdrojom sú aj fosfátové suroviny, apatity z polostrova Kola v Rusku.

Využitie

Používa sa ako zdroj žiarenia pre röntgenové prístroje.

Commons ponúka multimediálne súbory na tému yterbium
Wikislovník ponúka heslo yterbium

Periodická tabuľka chemických prvkov

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