Promethium is not in the neptunium series of radioactive decay.
The neptunium decay series is finished with the stable isotope thallium-205.
For example americium-241 decay to neptunium-237 and americium-243 decay to neptunium-239.
For the most common isotope of neptunium, Np-237, the decay daughter is protactinium-233.Each isotope has another type of decay.
Npn decays to Pan-4 and alpha. Only isotopes 234, 235, and 237 of neptunium can undergo alpha decay, the others decay by beta-, beta+, K capture, and/or gamma decay. So the only products of neptunium alpha decay can be protactinium isotopes 230, 231, or 233.
The alpha decay of americium-241 produce neptunium-237.
When neptunium disintegrates, it typically forms elements such as plutonium, americium, and curium through a process called radioactive decay. These elements are sequentially produced as neptunium undergoes nuclear reactions, leading to the creation of heavier elements.
It is possible. Neptunium can decay by spontaneous fission, and ytterbium is a possible daughter, although vanadium would have to be the co-daughter. (93NP --> 70Yb + 23V) It seems unlikely, however, as the split would more likely be closer to centerline mass.
Manmade elements. These have traditionally been considered to be: Technetium, Promethium, Neptunium, and all elements beyond Neptunium. However trace levels of several of these have since then been detected naturally.
After an alpha decay the atomic number of the new element formed is less with 4.
Neptunium is a solid metal.
Neptunium itself is an element, the simplest form of matter.
In the last years technetium, prometium, neptunium and plutonium was found in the nature but in extremely low concentrations.Because they are found in the universe. They have been observed in the spectrum of certain stars.
Yes, neptunium can be mixed with other elements to form compounds and alloys. Neptunium is a radioactive element, and its compounds are primarily produced for research purposes. Various elements such as oxygen, fluorine, and hydrogen can combine with neptunium to form different compounds.
Neptunium is a metal, and therefore it can in theory form all the usual kinds of compounds that metals form; it could combine with oxygen and form neptunium oxide. However, neptunium is a radioactive element with a very short half-life, therefore it does not stick around long enough to engage in chemical reactions, or even if it did, the resulting compound would also exist only for a very brief period of time.
Any element; neptunium can form himself a critical mass.
Promethium is a radioactive, silvery metallic element that is rare in its pure form. It may appear similar to other metallic elements but is distinguished by its radioactivity and glowing properties. In practical applications, promethium is usually in the form of a phosphor or a powder used in luminous paint or in radioactive power sources.
Uranium 238 is bombarded by neutrons, and forms Neptunium 238. Neptunium decays to form Plutonium 238.