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119 Uue Ununennium 315

Ununennium

UNKNOWN, BUT PREDICTED TO BE AN ALKALI METAL
Bohr Model: Electrons arranged in energy shells around the nucleus.

Ununennium, also known as eka-francium or simply element 119, is the hypothetical chemical element with symbol Uue and atomic number 119. Ununennium and Uue are the temporary systematic IUPAC name and symbol respectively, until a permanent name is decided upon. In the periodic table of the elements, it is expected to be an s-block element, an alkali metal, and the first element in the eighth period.

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Quick Facts

Atomic Number 119
Period 8
Group 1
Phase Solid
Appearance Unknown
About Unknown, But Predicted To Be An Alkali Metals

Alkali metals are highly reactive, soft, silver, and shiny metals found in Group 1. They readily lose their outermost electron to form positive ions (cations) with a charge of +1.

History

Discovered By GSI Helmholtz Centre for Heavy Ion Research
Named By Unknown

Physical Properties

Atomic Mass 315
Density 3 g/L
Molar Heat N/A J/(mol·K)
Phase Transition (Melting & Boiling Points)

Ununennium boils at 630 K. The melting point is currently unknown.

Atomic Properties

Electron Config *[Uuo] 8s1
Electronegativity N/A
Electron Affinity 63.87 kJ/mol
Ionization Energy N/A kJ/mol
Orbital Filling Diagram
This diagram visualizes electron configuration according to the Aufbau principle and Hund's rule. Boxes represent orbitals (s, p, d, f), while arrows indicate electrons with spin up or down. Electrons fill lower energy levels first and occupy orbitals singly before pairing.

Photograph

Image of Ununennium Source: Wikipedia

External Resources

Wikipedia PubChem Royal Society of Chemistry Periodic Videos (YouTube)

Study Guide

Atomic Number

The number of protons in the nucleus, which defines the element.

Atomic Mass

The average mass of an atom, including protons and neutrons.

Electronegativity

A measure of how strongly an atom attracts electrons in a bond.

Ionization Energy

The energy required to remove an electron from an atom.

Electron Config

The arrangement of electrons in the atom's energy shells.