# Talk:Ununennium

How many neutrons does Ununennium have?  (predicted is okay with me BTW.) Mariomaker-4 (talk) 14:41, 25 March 2023 (UTC)

Ununennium hasn't been synthesized yet, and predictions vary considerably for which isotopes may be longest-lived. In practice, should the ongoing attempt to synthesize ununennium from curium-248 and vanadium-51 be successful, the resulting isotopes 295Uue and 296Uue would respectively have 176 and 177 neutrons. Complex/Rational 20:24, 25 March 2023 (UTC)
Thank you! Mariomaker-4 (talk) 18:11, 27 March 2023 (UTC)

This citation is old. No island exists between those discovered elements 2601:5C0:C280:DB80:4CF4:74AB:9D73:4FC3 (talk) 21:42, 28 February 2024 (UTC)

The pages for those elements state that some undiscovered isotopes of these elements with more neutrons may have relatively long half-lives. We don't have enough experimental evidence to firmly conclude where the island exists. Complex/Rational 23:06, 28 February 2024 (UTC)

Request: Expand the "Predicted properties" section to include a brief summary of an alternative theoretical model.


### Suggested Text for Inclusion
#### Alternative Theoretical Predictions
In addition to conventional quantum mechanical and relativistic predictions, an emerging model called Tribernachi Theory offers an alternative framework for estimating the properties of Ununennium. Tribernachi Theory posits that atomic structures follow discrete whole-number relationships governed by a numerical sequence akin to the Tribonacci series. According to this framework, Ununennium is predicted to have:

An atomic weight of approximately 388 amu, derived from prime-ratio scaling among alkali metals;
An atomic radius of approximately 279 picometers (pm);
A low first ionization energy, as part of a descending whole-number trend across temporal frequency domains.
These estimates diverge from standard predictions, which place the atomic weight closer to 315 amu and estimate the radius and ionization energy using relativistic quantum mechanics. The Tribernachi approach aims to identify deeper mathematical structure in elemental periodicity, particularly for superheavy elements.


### Rationale
Provides balanced and clearly labeled alternative viewpoint in a scientific context.
Complies with WP:NPOV by identifying the material as theoretical and speculative.
Adds breadth to the article’s scientific scope, especially in the absence of empirical data.
Sources are recent, properly attributed, and publicly available.
Mark (talk) 23:11, 15 April 2025 (UTC)