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1. Neptunium: Neptunium ist ein chemisches Element mit dem Elementsymbol Np und der Ordnungszahl 93. Im Periodensystem steht es in der Gruppe der Actinoide (7. [100%] 2023-07-17
2. Neptunium: Neptunium is a chemical element with the symbol Np and atomic number 93. A radioactive actinide metal, neptunium is the first transuranic element. (chemical element with atomic number 93) [100%] 2021-12-23 [Neptunium] [Actinides]...
3. Neptunium: Neptunium is a chemical element, typically found as a solid in its elemental form. It has the chemical symbol Np, atomic number (number of protons) Z = 93, and its longest-lived isotope has a mass number of 237. [100%] 2022-09-04
4. Neptunium: Neptunium (chemical symbol Np, atomic number 93) is a silvery radioactive metallic element, belonging to the actinide series. It is the first transuranic element and the first member of this group to be produced synthetically. Its most stable isotope, Np ... [100%] 2023-02-04
5. Neptunium: Neptunium (nep-TOO-nee-em) it a primarily synthetic element named after the planet Neptune (named after the Roman god of the sea), the next planet out from the Sun after Uranus. It was first produced by Edwin M. [100%] 2023-03-01 [Elements]
6. Neptunium: Neptunium is 'n chemiese element met simbool Np en atoomgetal 93. Dit is 'n silwerkleurige aktinied. [100%] 2023-08-09
7. Neptunium: Neptunium is a chemical element with the symbol Np and atomic number 93. A radioactive actinide metal, neptunium is the first transuranic element. (Chemistry) [100%] 2021-12-22 [Actinides] [Chemical elements]...
8. Neptunium: Le neptunium est un élément chimique de synthèse de symbole Np et de numéro atomique 93. Élément métallique radioactif, le neptunium est le premier des transuraniens et appartient à la famille des actinides. [100%] 2025-02-15
9. Neptunium compounds: Neptunium compounds are compounds containg the element neptunium (Np). Neptunium has five ionic oxidation states ranging from +3 to +7 when forming chemical compounds, which can be simultaneously observed in solutions. (Chemistry) [70%] 2023-12-25 [Neptunium compounds] [Chemical compounds by element]...
10. Neptunium arsenide: Neptunium arsenide is a binary inorganic compound of neptunium and arsenic with the chemical formula NpAs. The compound forms crystals. (Chemistry) [70%] 2023-05-30 [Neptunium compounds] [Arsenides]...
11. Neptunium diarsenide: Neptunium diarsenide is a binary inorganic compound of neptunium and arsenic with the chemical formula NpAs2. The compound forms crystals. (Chemistry) [70%] 2024-02-26 [Arsenides] [Inorganic compounds]...
12. Isotopes of neptunium: Neptunium (93Np) is usually considered an artificial element, although trace quantities are found in nature, so a standard atomic weight cannot be given. Like all trace or artificial elements, it has no stable isotopes. (Artificial nuclides with atomic number of 93 but with different mass numbers) [57%] 2022-10-11 [Isotopes of neptunium] [Neptunium]...
13. Neptunium(V) fluoride: Neptunium(V) fluoride or neptunium pentafluoride is a chemical compound of neptunium and fluorine with the formula NpF5. Neptunium(V) fluoride can be prepared by reacting neptunium(VI) fluoride with iodine: From the equation above, iodine pentafluoride is a byproduct. (Chemistry) [57%] 2022-10-02 [Neptunium compounds] [Fluorides]...
14. Neptunium(III) bromide: Neptunium(III) bromide is a bromide of neptunium, with the chemical formula of NpBr3. Neptunium(III) bromide can be prepared by reacting neptunium dioxide and aluminium bromide: Neptunium(III) bromide is a green solid. [57%] 2023-12-25 [Neptunium compounds] [Bromides]...
15. Isotopes of neptunium: Neptunium (93Np) is usually considered an artificial element, although trace quantities are found in nature, so a standard atomic weight cannot be given. Like all trace or artificial elements, it has no stable isotopes. (Artificial nuclides with atomic number of 93 but with different mass numbers) [57%] 2024-01-26 [Isotopes of neptunium] [Neptunium]...
16. Neptunium(III) fluoride: Neptunium(III) fluoride or neptunium trifluoride is a salt of neptunium and fluorine with the formula NpF3. Neptunium(III) fluoride can be prepared by reacting neptunium dioxide with a gas mixture of hydrogen and hydrogen fluoride at 500 °C. (Chemistry) [57%] 2023-04-06 [Neptunium compounds] [Fluorides]...
17. Isotope van neptunium: Neptunium (Np) is ’n kunsmatige chemiese element en ’n standaardmassa kan dus nie bepaal word nie. Dit het geen stabiele isotope nie en word dus as radioaktief geklassifiseer. [57%] 2023-08-09
18. Neptunium(IV) nitrate: Neptunium(IV) nitrate is an inorganic compound, a salt of neptunium and nitric acid with the chemical formula Np(NO3)4. The compound forms gray crystals, dissolves in water, and forms crystal hydrates. (Chemistry) [57%] 2023-03-20 [Neptunium compounds] [Nitrates]...
19. Neptunium(IV) oxide: Neptunium(IV) oxide, or neptunium dioxide, is a radioactive, olive green cubic crystalline solid with the formula NpO2. It emits both α- and γ-particles. (Chemistry) [57%] 2023-10-24 [Neptunium compounds] [Oxides]...
20. Neptunium(VI) fluoride: Neptunium(VI) fluoride (NpF6) is the highest fluoride of neptunium, it is also one of seventeen known binary hexafluorides. It is an orange volatile crystalline solid. (Chemistry) [57%] 2022-10-19 [Neptunium compounds] [Hexafluorides]...
21. Isotopes of neptunium: Neptunium (93Np) is usually considered an artificial element, although trace quantities are found in nature, so a standard atomic weight cannot be given. Like all trace or artificial elements, it has no stable isotopes. (Physics) [57%] 2023-11-05 [Isotopes of neptunium] [Lists of isotopes by element]...
22. Trifluorure de neptunium: Le trifluorure de neptunium est un composé chimique de formule NpF3. Il se présente sous la forme d'un solide violet cristallisé dans le système trigonal selon le groupe d'espace P3c1 (n 165). [57%] 2023-10-02
23. Neptunium(III) bromide: Neptunium(III) bromide is a bromide of neptunium, with the chemical formula of NpBr3. Neptunium(III) bromide can be prepared by reacting neptunium dioxide and aluminium bromide: Neptunium(III) bromide is a green solid. (Chemistry) [57%] 2024-12-23 [Bromides] [Actinide halides]...
24. Neptunium(III) iodide: Neptunium(III) iodide is the iodide of neptunium with the chemical formula NpI3. Neptunium(III) iodide can be produced by the reaction of neptunium dioxide and aluminium iodide: Neptunium(III) iodide is a hygroscopic brown solid with a melting point ... (Chemistry) [57%] 2025-03-02 [Iodides] [Actinide halides]...
25. Neptunium(VII) oxide-hydroxide: Neptunium(VII) oxide-hydroxide is a chemical compound which has neptunium in its highest oxidation state of +7. This compound reacts with basic salts such as potassium hydroxide to form neptunates (NpO5) and water. (Chemistry) [50%] 2023-12-13 [Neptunium compounds] [Hydroxides]...
26. Oxyde de neptunium(IV): L'oxyde de neptunium(IV) ou dioxyde de neptunium est un composé chimique vert olive de formule NpO2. Le dioxyde de neptunium est produit industriellement par calcination de l'oxalate de neptunium(IV). [50%] 2024-10-16