Nihonium

Scientists made a new thing.

This new thing is called nihonium. It was found by teams in Russia and Japan. They made it in a lab. It is very hard to make. It only lasts for a few seconds.

Scientists use big machines to make it. They hit one small thing with another. This makes the new part. This part is very heavy. It is also very unstable.

We do not know much about it. We can only make a tiny bit. It is too small to see. It is a very special discovery.

Scientists made a new chemical element. It is called nihonium. Its symbol is Nh. It has the atomic number 113.

Nihonium is very hard to find. It is a synthetic element. This means it is made by people in a lab. Scientists first made it in 2003. A team from Russia and America worked on it. Later, a team from Japan also found it.

This element is very radioactive. It is also very unstable. This means it breaks apart very fast. One version of it lasts only 10 seconds. Scientists think some heavy parts might last longer. They call this the island of stability.

We do not know much about nihonium yet. We can only make tiny amounts. It is expected to be a metal. It might act like other metals such as thallium. It is a very special part of our world.

Nihonium is a very special chemical element. Its symbol is Nh and its atomic number is 113. It is a synthetic element, which means it does not occur naturally. Instead, scientists must create it in a laboratory. This element is part of the p-block in the periodic table. It belongs to period 7 and group 13. Because it is so new, we know very little about it.

Making nihonium is a difficult task that requires a lot of energy. Scientists use a way of working called fusion. In one method, they use hot fusion to hit a heavy target with lighter ions. For example, they hit americium-243 with calcium-48. This process creates element 115, which then breaks down. As it breaks down, it produces nihonium.

Many different teams worked hard to find this element. A group from Russia and America worked at the Joint Institute for Nuclear Research in Dubna. They reported making it between July 14 and August 10 in 2003. Later, a Japanese team at Riken in Wakō found it too. They used a different method called cold fusion. They hit bismuth-209 with zinc-70 in 2004.

It took several years to prove the discovery was real. Teams in the United States, Germany, Sweden, and China all helped check the work. In 2015, a special group called the IUPAC/IUPAP Joint Working Party recognized the element. They gave the naming rights to the Riken team in Japan. In 2016, the name nihonium was officially approved. The name comes from the Japanese word for Japan.

Nihonium is extremely radioactive and unstable. Its most stable version, nihonium-286, lasts for only about 10 seconds. Scientists think some heavy elements might last longer in a place called the island of stability. This theory suggests that adding more neutrons can make atoms live longer. We expect nihonium to be a post-transition metal. It might act like other metals such as thallium or silver.

Nihonium is a synthetic chemical element with the symbol Nh and the atomic number 113. Because it is synthetic, it does not exist naturally in the world. Instead, scientists must create it using massive machines in specialized laboratories. It is classified as a transactinide element located in the p-block of the periodic table. Specifically, it belongs to period 7 and group 13. This placement suggests it shares certain characteristics with other elements in its group.

Scientists use two main methods to create superheavy elements like nihonium: hot fusion and cold fusion. In hot fusion, researchers bombard a heavy actinide target with lighter ions. For example, the Joint Institute for Nuclear Research (JINR) used a target of americium-243 and bombarded it with calcium-48 projectiles. This reaction produced element 115, which then underwent alpha decay to create nihonium. In contrast, cold fusion uses different targets, such as bismuth-209, bombarded with zinc-70 ions. This method was used by the Riken team in Japan to produce the isotope nihonium-278.

Nihonium is extremely radioactive and unstable. Its most stable known isotope is nihonium-286, which has a half-life of only about 10 seconds. This means the atoms decay very quickly after they are made. However, some scientists study the "island of stability" theory to explain why some superheavy nuclides live longer than others. This theory suggests that certain combinations of protons and neutrons can create more stable atoms. Experiments show that as more neutrons are added to nihonium isotopes, their half-lives increase from milliseconds to several seconds.

The discovery of nihonium involved a long history of international scientific collaboration. Between July 14 and August 10, 2003, a Russian-American team at JINR in Dubna, Russia, reported the first creation of the element. They worked with the Lawrence Livermore National Laboratory in California. Later, on July 23, 2004, a Japanese team at Riken in Wakō, Japan, led by Kōsuke Morita, reported their own successful synthesis.

Confirming a new element is a rigorous process that takes many years. The IUPAC/IUPAP Joint Working Party must examine all claims to ensure the atomic number is truly new. To prove a discovery, scientists often use "anchoring," which means tracing the decay chain back to a known element. The Riken team achieved this by showing their nihonium-278 decayed into bohrium-266, an element already discovered in 2000. Other teams in the United States, Germany, Sweden, and China also performed independent work to verify these results.

In 2015, the Joint Working Party officially recognized the element and assigned naming rights to the Riken team. In 2016, the name "nihonium" was approved. The name is derived from "Nihon," which is the common Japanese name for Japan. This honors the Japanese scientists who provided the definitive confirmation of the element. The discovery was significant because it filled a gap in the periodic table for odd-numbered elements.

While very little is known about its physical appearance, scientists can predict its chemical behavior. Nihonium is expected to be a post-transition metal. It is predicted to have similar properties to its group members: boron, aluminium, gallium, indium, and thallium. However, it may show unique differences. For instance, nihonium should be more stable in a +1 oxidation state than a +3 state. In this +1 state, it might behave more like silver or astatine than its relative thallium. Preliminary experiments suggest that elemental nihonium is not very volatile and is less reactive than thallium.