| slovo | definícia |
erbium
(encz) | erbium,erbium Zdeněk Brož |
erbium
(czen) | erbium,erbium Zdeněk Brož |
Erbium
(gcide) | Erbium \Er"bi*um\, n. [NL. from Ytterby, in Sweden, where
gadolinite is found. Cf. Terbium, Yttrium, Ytterbium.]
(Chem.)
A rare earth element of the lanthanide series associated with
several other rare elements in the mineral gadolinite from
Ytterby in Sweden. Symbol Er. It has atomic number 68 and an
atomic weight of 167.26. The pure element is metallic with a
bright, silvery luster. It is relatively stable in air, not
oxidizing as quickly as some other rare earths. Its salts are
rose-colored and give characteristic spectra, and the pink
oxide has been added as a colorant in glass and porcelain
enamel glazes. Its sesquioxide Er2O3 is called erbia.
--HCP61
[1913 Webster +PJC] |
erbium
(wn) | erbium
n 1: a trivalent metallic element of the rare earth group;
occurs with yttrium [syn: erbium, Er, {atomic number
68}] |
erbium
(elements) | erbium
Symbol: Er
Atomic number: 68
Atomic weight: 167.26
Soft silvery metallic element which belongs to the lanthanoids. Six
natural isotopes that are stable. Twelve artificial isotopes are known.
Used in nuclear technology as a neutron absorber. It is being
investigated
for other possible uses. Discovered by Carl G. Mosander in 1843.
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| | podobné slovo | definícia |
terbium
(encz) | terbium,terbium n: Zdeněk Brož |
terbium metal
(encz) | terbium metal, n: |
ytterbium
(encz) | ytterbium,yterbium n: [chem.] PetrVytterbium,ytterbium n: Zdeněk Brož |
adverbium
(czen) | adverbium,adverb Zdeněk Brož |
terbium
(czen) | terbium,terbiumn: Zdeněk Brož |
yterbium
(czen) | yterbium,ytterbiumn: [chem.] PetrV |
ytterbium
(czen) | ytterbium,ytterbiumn: Zdeněk Brož |
Erbium
(gcide) | Erbium \Er"bi*um\, n. [NL. from Ytterby, in Sweden, where
gadolinite is found. Cf. Terbium, Yttrium, Ytterbium.]
(Chem.)
A rare earth element of the lanthanide series associated with
several other rare elements in the mineral gadolinite from
Ytterby in Sweden. Symbol Er. It has atomic number 68 and an
atomic weight of 167.26. The pure element is metallic with a
bright, silvery luster. It is relatively stable in air, not
oxidizing as quickly as some other rare earths. Its salts are
rose-colored and give characteristic spectra, and the pink
oxide has been added as a colorant in glass and porcelain
enamel glazes. Its sesquioxide Er2O3 is called erbia.
--HCP61
[1913 Webster +PJC] |
Terbium
(gcide) | Terbium \Ter"bi*um\, n. [NL., fr. Ytterby, in Sweden. See
Erbium.] (Chem.)
A rare metallic element, found in certain minerals, as
gadolinite and samarskite, with other rare earths such as
ytterbium. Symbol Tb. Atomic number 65. Atomic weight
158.925.
[1913 Webster +PJC] |
Ytterbium
(gcide) | Ytterbium \Yt*ter"bi*um\, n. [NL., fr. Ytterby, in Sweden. See
Erbium.] (Chem.)
A rare element of the boron group, sometimes associated with
yttrium or other related elements, as in euxenite and
gadolinite. Symbol Yb; provisional atomic weight 173.2. Cf.
Yttrium.
[1913 Webster]
Note: Ytterbium is associated with other rare elements, and
probably has not been prepared in a pure state.
[1913 Webster] |
terbium
(wn) | terbium
n 1: a metallic element of the rare earth group; used in lasers;
occurs in apatite and monazite and xenotime and ytterbite
[syn: terbium, Tb, atomic number 65] |
terbium metal
(wn) | terbium metal
n 1: a separate group of related lanthanides, including terbium,
europium, gadolinium, and sometimes dysprosium |
ytterbium
(wn) | ytterbium
n 1: a soft silvery metallic element; a rare earth of the
lanthanide series; it occurs in gadolinite and monazite and
xenotime [syn: ytterbium, Yb, atomic number 70] |
terbium
(elements) | terbium
Symbol: Tb
Atomic number: 65
Atomic weight: 158.924
Silvery metallic element belonging to the lanthanoids. Tb-159 is the
only
stable isotope, there are seventeen artificial isotopes. Discovered by
G.G. Mosander in 1843.
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ytterbium
(elements) | ytterbium
Symbol: Yb
Atomic number: 70
Atomic weight: 173.04
Silvery metallic element of the lanthanoids. Seven natural isotopes and
ten artificial isotopes are known. Used in certain steels. Discovered
by
J.D.G. Marignac in 1878.
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