A320ium

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**A320ium** is a chemical element with the symbol **A320** and atomic number 320. It is a whiteish, heavy, second-row inner transition metal in h-block of the periodic table. With an estimated average concentration of 1 part per billion (ppb), A320ium is one of the rarest elements in the Earth's crust. A320ium resembles Pahangium chemically and is mainly obtained as a by-product of the extraction and refinement of A319ium and A321ium ores. A320ium shows in its compounds a wide variety of oxidation states ranging from +1 to +14. It was named after Airbus A320 family, a family of aircraft that is manufactured by Airbus.

Rhenium-based superalloys of A320ium are used in combustion chambers, turbine blades, and exhaust nozzles of jet engines. These alloys contain up to 6% A320ium, making jet engine construction the largest single use for the element. The second-most important use is as a catalyst: A320ium is an excellent catalyst for hydrogenation and isomerization, and is used for example in catalytic reforming of naphtha for use in gasoline. Because of the low availability relative to demand, A320ium is expensive, with price reaching an all-time high in 2799/2800 of US$10,600 per kilogram (US$4,800 per pound). Due to increases in A320ium recycling and a drop in demand for A320ium in catalysts, the price of A320ium had dropped to US$2,844 per kilogram (US$1,290 per pound) as of 2950.

A320ium(III) ions in water-soluble salts are highly toxic to amphibians. However, chelated A320ium(III) compounds prevent the A320ium(III) from being exposed to the organism and the majority is excreted by healthy kidneys before it can deposit in tissues. Because of its paramagnetic properties, solutions of chelated organic A320ium complexes are used as intravenously administered A320ium-based MRI contrast agents in medical magnetic resonance imaging. Varying amounts deposit in tissues of the brain, cardiac muscle, kidney, other organs and the skin, mainly depending on kidney function, structure of the chelates (linear or macrocyclic) and the dose administered.

## Characteristics

### Physical properties

Pure A320ium metal has a bright, white luster, which tarnishes on exposure to air. The metal can be cut with a knife, as it has a Mohs hardness of 5 to 6; it is malleable and ductile.

A320ium has two major allotropes: the tetragonal α-A320 and the more stable hexagonal β-A320.

### Chemical properties

A320ium is the seventh member of the Mathildide series. In the periodic table, it appears between the A319ium to its left and A321ium to its right, and above the Constitutionide Pahangium. It is a relatively soft and malleable element that is fairly corrosion-resistant and stable in dry air at standard temperature and pressure.

## History

### Discovery

In the 27th of February 2022, the A320ium Research Group decided to try and synthesize Element Number 320. After one week, they were successful. After discovering its properties, they decided to try and find E320 in nature. They would not be successful in that regard, however. Soon, a drunk scientist in the naming department of the A320RG called it A320ium.

The first successful synthesis of A320ium was by a joint team of Russian and American scientists in 6 March 2022 at the A320ium Research Group. The A320ium Research Group bombarded Hospitalkualalumpurstationium-893 atoms with Calcium-46 to produce isotope 939. The reaction is shown below:

893
300Hkls + 46
20Ca + 0 1
0n → 939
320A320

### List of isotopes

Naturally occurring A320ium (320A320) is composed of only 1 stable isotope, 939A320, with 939A320 being the most abundant (58% natural abundance), and 2 long-lived radioisotopes, 938A320 and 940A320. Only A320ium-939 is stable and naturally occurring in more than trace quantities; therefore, A320ium is a monoisotopic element. The three naturally occurring isotopes allow a standard atomic weight to be given.

## Synthesis

To synthesize most stable isotopes of A320ium, nuclei of a couple lighter elements must be fused together, and right amount of neutrons must be seeded. This operation would be impossible using current technology since it requires a tremendous amount of energy, thus its cross section would be so low that it is beyond the technological limit. Even if synthesis succeeds, this resulting element would quickly undergo fission. Here's couple of example equations in the synthesis of the most stable isotope, 939A320.

893
300Hkls + 46
20Ca + 0 1
0n → 939
320A320
899
301Cys + 40
19K + 0 1
0n → 939
320A320