englesko - srpski rečnik

englesko - srpski rečnik

neptunium prevod

neptunium

/ neptuːniəm /

imenicahemija

Množina reči neptunium je neptunia.

Sinonimi:
Np · atomic number 93

Sinonimi:
Np · atomic number 93

Prevedi neptunium na: francuski · nemački

ETYM New Lat.
One of the transuranic elements.
Silvery, radioactive metallic element of the actinide series, symbol Np, atomic number 93, atomic weight 237.048. It occurs in nature in minute amounts in pitchblende and other uranium ores, where it is produced from the decay of neutron-bombarded uranium in these ores. The longest-lived isotope, Np-237, has a half-life of 2.2 million years. The element can be produced by bombardment of U-238 with neutrons and is chemically highly reactive.
It was first synthesized in 1940 by us physicists E McMillan (1907–) and P Abelson (1913–), who named it for the planet Neptune (since it comes after uranium as the planet Neptune comes after Uranus).
Neptunium was the first transuranic element to be synthesized.
A radioactive transuranic metallic element; found in trace amounts in uranium ores; a by-product of the production of plutonium; SYN. Np, atomic number 93.

hemijski element

muški rod

neptunij

muški rodhemija

Veštački dobijen radioaktivni elemenat kad je neutronima bio bombardovan prirodni uran; hemijskim procesom pretvara se u drugi elemenat - plutonijum (lat.)

neptunijum

muški rodhemija

Veštački element, po hemijskim osobinama sličan uranu; gradi jedinjenja analogna uranu.
Radioaktivan element (transuran), redni broj 93, znak Np; u prirodi ne postoji, nego dobiven veštačkim putem 1943-1944 g., kada je prirodni uran bio bombardovan neutronima; raspadajući se radioaktivno, on se pretvara u drugi transuranski hemijski element plutonijum.

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