Neptunium
Neptunium is a chemical element with the symbol Np and atomic number 93. A radioactive actinide metal, neptunium is the first transuranic element. Its position in the periodic table just after uranium, named after the planet Uranus, led to it being named after Neptune, the next planet beyond Uranus. A neptunium atom has 93 protons and 93 electrons, of which seven are valence electrons. Neptunium metal is silvery and tarnishes when exposed to air. The element occurs in three allotropic forms and it normally exhibits five oxidation states, ranging from +3 to +7. It is radioactive, poisonous, pyrophoric, and capable of accumulating in bones, which makes the handling of neptunium dangerous.
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Neptunium
Neptunium is a chemical element with the symbol Np and atomic number 93. A radioactive actinide metal, neptunium is the first transuranic element. Its position in the periodic table just after uranium, named after the planet Uranus, led to it being named after Neptune, the next planet beyond Uranus. A neptunium atom has 93 protons and 93 electrons, of which seven are valence electrons. Neptunium metal is silvery and tarnishes when exposed to air. The element occurs in three allotropic forms and it normally exhibits five oxidation states, ranging from +3 to +7. It is radioactive, poisonous, pyrophoric, and capable of accumulating in bones, which makes the handling of neptunium dangerous.
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El neptuni és l'element químic ...... la fabricació de plutoni 239.
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El neptunio es un elemento tra ...... proviene del planeta Neptuno.
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Il nettunio è un elemento chim ...... racce, nei minerali di uranio.
@it
Is é an neiptiúiniam dúil chei ...... siúin adamhacha leictreachais.
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Le neptunium est un élément ch ...... ranus dans le système solaire.
@fr
Neptun (łac. neptunium, symbol ...... na znaleźć w rudach uranowych.
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Neptunio estas kemia elemento ...... de nukleaj reaktoroj.
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@eo
Neptunioa elementu kimiko bat ...... ran agertzen da uranio-meetan.
@eu
Neptunium (chemická značka Np) ...... á o chování ve vodném roztoku.
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Neptunium adalah suatu unsur k ...... lah kecil dalam bijih uranium.
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El neptuni és l'element químic ...... la fabricació de plutoni 239.
@ca
El neptunio es un elemento tra ...... proviene del planeta Neptuno.
@es
Il nettunio è un elemento chim ...... racce, nei minerali di uranio.
@it
Is é an neiptiúiniam dúil chei ...... y, California sa bhliain 1940.
@ga
Le neptunium est un élément ch ...... ranus dans le système solaire.
@fr
Neptun (łac. neptunium, symbol ...... na znaleźć w rudach uranowych.
@pl
Neptunio estas kemia elemento ...... de nukleaj reaktoroj.
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@eo
Neptunioa elementu kimiko bat ...... ran agertzen da uranio-meetan.
@eu
Neptunium (chemická značka Np) ...... izotop a následně těžší prvek.
@cs
Neptunium adalah suatu unsur k ...... lah kecil dalam bijih uranium.
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Neiptiúiniam
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Neptun (pierwiastek)
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Neptuni
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Neptunio
@eo
Neptunio
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Neptunio
@eu
Neptunium
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Neptunium
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Neptunium
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Neptunium
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