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Flerovium

physical science Maturity 11-13 Next article →

Flerovium is a superheavy, man-made chemical element. It has the symbol Fl and the atomic number 114. This element is part of the carbon group on the periodic table. It is also a transactinide, which means it sits past the actinide series.

Next proton shell
Next proton shell

Scientists find it very interesting because it is extremely radioactive. This means it is unstable and breaks apart very quickly. In fact, most versions of this element only last for a few seconds. It is a very rare substance that can only be made one atom at a time.

Making flerovium is a difficult task that requires hitting atoms together. Scientists use a process called direct synthesis to create it. They take a target made of plutonium-244 and hit it with calcium-48 nuclei. These nuclei are moved very fast using special equipment. When they crash together, they can form a new, heavy atom.

IBA nuclear shells
IBA nuclear shells

Flerovium can also be made through radioactive decay. This happens when even heavier elements break down into smaller parts. Because these atoms disappear so fast, scientists must work very quickly to study them.

Researchers first saw signs of this element in late 1998. A team led by Yuri Oganessian at the Joint Institute for Nuclear Research in Dubna, Russia, found the first hint. They used upgraded equipment to detect and separate the tiny atoms. They published their findings in January 1999.

RUSMARKA-1660
RUSMARKA-1660

Later, in June 1999, the team made a confirmed discovery. It took more work over many years to be sure. In 2011, the group IUPAC officially recognized the discovery. This group is the organization that decides the names of elements.

There are six known isotopes, or versions, of flerovium. These versions have different mass numbers between 284 and 289. The most stable version has a half-life of about 2.1 seconds. Another unconfirmed version might last for 19 seconds.

RUSMARKA-1660
RUSMARKA-1660

This is a long time for such a heavy element. Some scientists believe flerovium is near an "island of stability." This is a theoretical place where heavy elements might stay together longer. This happens because of magic numbers of protons and neutrons that fill nuclear shells.

Flerovium behaves in ways that surprise scientists. It is the heaviest member of the carbon group. Usually, elements in this group are metals like lead. However, studies show that flerovium is unexpectedly volatile. This means it can turn into a gas quite easily.

IBA nuclear shells
IBA nuclear shells

It might even be a gas at normal temperatures and pressure. It still shows some metallic properties, though. This makes it a very strange and wonderful subject for science.

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