Group 8 element

Some metals are in a family.

One metal is iron. It is very common in the Earth. Iron helps our bodies stay well. It carries air through our blood.

But iron can also make rust. This happens when it meets water and air. Rust flakes off the metal.

Another metal is ruthenium. It is very rare. It is used in parts for electricity.

Osmium is a very hard metal. It is also very brittle.

Hassium is a special metal. It is made by scientists. It is not found in the ground.

These metals are all very different.

Group 8 is a family of metals. These metals live in a column on the periodic table. The group has four members. They are iron, ruthenium, osmium, and hassium.

Iron is very common in the Earth. It is the fourth most common element in the crust. Iron helps our bodies stay healthy. It helps move oxygen through our blood. But iron can also rust. This happens when it meets water and oxygen. Rust flakes off and shows more metal.

Ruthenium is a very rare metal. It is used for electrical parts. It helps make those parts last longer. Some ruthenium molecules might even fight cancer.

Osmium is a very hard metal. It is also brittle, which means it can break easily. It is hard to shape because it has a very high melting point. It stays shiny even when it is hot.

Hassium is a man-made metal. It is not found in nature. It is made by hitting lead atoms with iron atoms. Hassium is also radioactive. This means it breaks down very quickly. Scientists have not learned much about it yet.

Group 8 is a special family of metals. These metals live in a single column on the periodic table. This group includes iron, ruthenium, osmium, and hassium. All four are transition metals. They belong to the d-block of the periodic table. Scientists call them Group 8. This name became the modern standard in 1990. Before that, they had different names in different systems. For example, the old European system called them group VIII.

These metals work in different ways. Iron reacts with water and oxygen. This creates brown or black rust. Rust takes up more space than the metal. This causes it to flake off. This exposes more fresh metal to rust. Ruthenium is used for electrical contacts. It makes them last longer. People use a process called electroplating to apply it. Osmium is very hard and brittle. It stays shiny even when it is hot. It has a very high melting point.

People have known about these metals for a long time. Iron is very old. We have used it since before 3000 BCE. We do not know who first discovered it. Ruthenium was found in 1844 by K. E. Claus. Osmium was found in 1803 by S. Tennant and W. H. Wollaston. Hassium is much newer. It was made in 1984 by P. Armbruster and G. Münzenberg. It is a synthetic element. This means humans made it in a lab.

Each metal has its own unique facts. Iron is the fourth most common element in Earth's crust. It is found in minerals like hematite and magnetite. Ruthenium is very rare. It often comes from refining nickel. Osmium is also found when refining nickel. It can be found in osmiridium. Hassium is not found in nature. It is extremely radioactive. Scientists make it by hitting lead-208 atoms with iron-58 atoms.

These metals connect to our daily lives. Iron is very important for your health. It is a part of hemoglobin and myoglobin. These proteins move oxygen through your body. Too little iron can cause anemia. Too much can be toxic. Ruthenium is not part of the human body. However, some ruthenium molecules might fight cancer. Osmium and hassium have no known roles in living things. They are mostly used in science and industry.

Group 8 is a vertical column of chemical elements in the periodic table. This group consists of four specific transition metals. These metals are iron, ruthenium, osmium, and hassium. They are all located within the d-block of the periodic table. Because they share a column, they show similar patterns in their electron configuration. This refers to how electrons are arranged in their outermost shells. These patterns lead to predictable trends in how the elements behave chemically. In 1990, the IUPAC adopted "Group 8" as the modern standard name.

Each element in this group has a distinct chemical mechanism. Iron reacts with oxygen and water to form hydrated iron oxides. This process is commonly known as rusting. Unlike some metals that form a protective layer, rust occupies more volume than the original metal. This expansion causes the rust to flake off. As it flakes, it exposes fresh metal surfaces to further corrosion. Ruthenium is often used to harden alloys of platinum and palladium. It is applied to electrical contacts through electroplating or sputtering. These processes involve using electricity or particles to coat a base metal. This thin film makes the electrical contacts more durable.

Osmium possesses very different physical properties compared to its group members. It is a hard but brittle metal. It remains lustrous, or shiny, even when exposed to high temperatures. Osmium has an extremely high bulk modulus, which measures how much a substance resists compression. Its bulk modulus is reported between 395 and 462 GPa. This value rivals the 443 GPa of a diamond. Because of its high melting point and low vapor pressure, solid osmium is difficult to machine or form. Its melting point is 3306 K, which is the fourth highest of all elements. Only carbon, tungsten, and rhenium have higher melting points.

History shows that these elements were discovered at very different times. Iron is a primordial element that humans have used since before 3000 BCE. The specific discoverer of iron remains unknown. Ruthenium was discovered in 1844 by K. E. Claus. Osmium was identified in 1803 by S. Tennant and W. H. Wollaston. Hassium is a synthetic element, meaning it is made by humans in a laboratory. It was produced in 1984 by P. Armbruster and G. Münzenberg. Because hassium is extremely radioactive, it decays very quickly. This makes it very difficult to study in large amounts.

These elements occur in nature in different ways and quantities. Iron is the fourth most common element in the Earth's crust by mass. It is found in minerals like hematite, magnetite, and taconite. Commercial iron is produced by heating these minerals in a blast furnace with coke and calcium carbonate. Ruthenium is a very rare metal in the Earth's crust. It is often found in minerals like pentlandite and pyroxinite. It can be obtained as a waste product from refining nickel. Osmium is also found during nickel refining or within osmiridium. Hassium is not found naturally because it is so radioactive. Scientists produce it by the bombardment of lead-208 atoms with iron-58 atoms.

Biological roles for these metals vary significantly. Iron is essential for human health. It is a vital component of the proteins hemoglobin and myoglobin. These proteins are responsible for transporting oxygen around the human body. Iron is also a part of some hormones. A lack of iron can cause iron deficiency anemia, but an excess can be toxic. Ruthenium has no normal role in the human body. However, some ruthenium-containing molecules may be used to fight cancer. Osmium and hassium have no known biological roles.

Understanding Group 8 helps scientists connect different fields of study. The study of iron connects geology, through its presence in minerals, to human biology. The study of hassium connects nuclear physics to chemistry through the process of atom bombardment. These elements show how the arrangement of electrons dictates the physical world. From the rust on a tool to the oxygen in our blood, Group 8 elements are deeply connected to life and industry.