| slovo | definícia |
atomic number 9
(wn) | atomic number 9
n 1: a nonmetallic univalent element belonging to the halogens;
usually a yellow irritating toxic flammable gas; a powerful
oxidizing agent; recovered from fluorite or cryolite or
fluorapatite [syn: fluorine, F, atomic number 9] |
| | podobné slovo | definícia |
atomic number 90
(wn) | atomic number 90
n 1: a soft silvery-white tetravalent radioactive metallic
element; isotope 232 is used as a power source in nuclear
reactors; occurs in thorite and in monazite sands [syn:
thorium, Th, atomic number 90] |
atomic number 91
(wn) | atomic number 91
n 1: a short-lived radioactive metallic element formed from
uranium and disintegrating into actinium and then into lead
[syn: protactinium, protoactinium, Pa, {atomic number
91}] |
atomic number 92
(wn) | atomic number 92
n 1: a heavy toxic silvery-white radioactive metallic element;
occurs in many isotopes; used for nuclear fuels and nuclear
weapons [syn: uranium, U, atomic number 92] |
atomic number 93
(wn) | atomic number 93
n 1: a radioactive transuranic metallic element; found in trace
amounts in uranium ores; a by-product of the production of
plutonium [syn: neptunium, Np, atomic number 93] |
atomic number 94
(wn) | atomic number 94
n 1: a solid silvery grey radioactive transuranic element whose
atoms can be split when bombarded with neutrons; found in
minute quantities in uranium ores but is usually
synthesized in nuclear reactors; 13 isotopes are known with
the most important being plutonium 239 [syn: plutonium,
Pu, atomic number 94] |
atomic number 95
(wn) | atomic number 95
n 1: a radioactive transuranic metallic element; discovered by
bombarding uranium with helium atoms [syn: americium,
Am, atomic number 95] |
atomic number 96
(wn) | atomic number 96
n 1: a radioactive transuranic metallic element; produced by
bombarding plutonium with helium nuclei [syn: curium,
Cm, atomic number 96] |
atomic number 97
(wn) | atomic number 97
n 1: a radioactive transuranic element; discovered by bombarding
americium with helium [syn: berkelium, Bk, {atomic
number 97}] |
atomic number 98
(wn) | atomic number 98
n 1: a radioactive transuranic element; discovered by bombarding
curium with alpha particles [syn: californium, Cf,
atomic number 98] |
atomic number 99
(wn) | atomic number 99
n 1: a radioactive transuranic element produced by bombarding
plutonium with neutrons [syn: einsteinium, Es, E,
atomic number 99] |
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