| slovo | definícia |
atomic number 6
(wn) | atomic number 6
n 1: an abundant nonmetallic tetravalent element occurring in
three allotropic forms: amorphous carbon and graphite and
diamond; occurs in all organic compounds [syn: carbon,
C, atomic number 6] |
| | podobné slovo | definícia |
atomic number 60
(wn) | atomic number 60
n 1: a yellow trivalent metallic element of the rare earth
group; occurs in monazite and bastnasite in association
with cerium and lanthanum and praseodymium [syn:
neodymium, Nd, atomic number 60] |
atomic number 61
(wn) | atomic number 61
n 1: a soft silvery metallic element of the rare earth group
having no stable isotope; was discovered in radioactive
form as a fission product of uranium [syn: promethium,
Pm, atomic number 61] |
atomic number 62
(wn) | atomic number 62
n 1: a grey lustrous metallic element of the rare earth group;
is used in special alloys; occurs in monazite and
bastnasite [syn: samarium, Sm, atomic number 62] |
atomic number 63
(wn) | atomic number 63
n 1: a bivalent and trivalent metallic element of the rare earth
group [syn: europium, Eu, atomic number 63] |
atomic number 64
(wn) | atomic number 64
n 1: a ductile silvery-white ductile ferromagnetic trivalent
metallic element of the rare earth group [syn:
gadolinium, Gd, atomic number 64] |
atomic number 65
(wn) | atomic number 65
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] |
atomic number 66
(wn) | atomic number 66
n 1: a trivalent metallic element of the rare earth group; forms
compounds that are highly magnetic [syn: dysprosium,
Dy, atomic number 66] |
atomic number 67
(wn) | atomic number 67
n 1: a trivalent metallic element of the rare earth group;
occurs together with yttrium; forms highly magnetic
compounds [syn: holmium, Ho, atomic number 67] |
atomic number 68
(wn) | atomic number 68
n 1: a trivalent metallic element of the rare earth group;
occurs with yttrium [syn: erbium, Er, {atomic number
68}] |
atomic number 69
(wn) | atomic number 69
n 1: a soft silvery metallic element of the rare earth group;
isotope 170 emits X-rays and is used in small portable
X-ray machines; it occurs in monazite and apatite and
xenotime [syn: thulium, Tm, atomic number 69] |
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