Group 7 element facts for kids

Group 7 is a special collection of elements found in the periodic table. These elements share similar features because of how their atoms are built.

The elements in Group 7 are manganese (Mn), technetium (Tc), rhenium (Re), and bohrium (Bh). They are all part of the transition metals section of the periodic table. Transition metals are known for being strong, shiny, and good at conducting electricity.

What is Group 7?

The periodic table is like a big chart that organizes all the known chemical elements. Elements are placed into groups (vertical columns) and periods (horizontal rows) based on their properties. Group 7 is one of these vertical columns. Elements in the same group often behave in similar ways during chemical reactions.

The Elements of Group 7

Each element in Group 7 has its own unique story and uses. Let's explore them!

Manganese (Mn)

Manganese is a silvery-gray metal.

Manganese is a silvery-gray metal that is quite hard and brittle. It's the most common element in Group 7. Manganese is super important in making steel, which is used to build everything from cars to skyscrapers. It helps make steel stronger and more resistant to rust. You can also find manganese in batteries and even in your body, as it's needed for healthy bones and other functions.

Technetium (Tc)

Technetium is a very special element because it's the lightest element that has no stable isotopes. This means all forms of technetium are radioactive and slowly decay over time. Technetium was the first element to be made artificially in a lab, in 1937. Even though it's radioactive, a specific type of technetium is widely used in hospitals for medical imaging, helping doctors see inside the human body.

Rhenium (Re)

Rhenium is a very dense and heavy metal, even heavier than lead! It has one of the highest melting points of all elements, meaning it can withstand extreme heat. Because of this amazing property, rhenium is often used in high-temperature alloys, especially in parts for jet engines and rockets. These engines need materials that won't melt or break down under intense heat and pressure.

Bohrium (Bh)

Bohrium is a synthetic element, which means it doesn't exist naturally on Earth. Scientists have to create it in special laboratories by smashing smaller atoms together. Bohrium is extremely radioactive and unstable, lasting for only tiny fractions of a second before it decays into other elements. Because it's so short-lived and difficult to make, bohrium is mainly used for scientific research to understand more about the properties of very heavy elements.

Where is Group 7 on the Periodic Table?

Group 7 is located in the middle section of the periodic table. This section is home to the transition metals. Transition metals are known for being good conductors of heat and electricity. They are also often colorful and can form many different types of chemical compounds. The elements in Group 7, like other transition metals, are strong, shiny, and have high melting points.

Images for kids

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  Structure of the facial isomer of M(R-bpy)(CO)3X where M = Mn, Re; X = Cl, Br; R-bpy = 4,4'-disubstituted-2,2'-bipyridine

See also

In Spanish: Elementos del grupo 7 para niños