Group 7 Elements Are Called: The Manganese Group and Its Metals

Group 7 elements are called a distinct quartet within the periodic table, occupying a central position in the broad family of transition metals. This collection — manganese (Mn), technetium (Tc), rhenium (Re) and bohrium (Bh) — forms the modern group known as Group 7 in the IUPAC 18-column system. The phrase “Group 7 elements are called” is commonly encountered in introductory chemistry, where teachers and textbooks introduce the idea that these elements are the seventh column in the d‑block of the periodic table and share a number of characteristic features. In this article, we unpack what Group 7 elements are called, why they are grouped together, and what makes each member unique, while also exploring how their chemistry sits within the wider context of the periodic table.

Group 7 Elements Are Called: A Quick Definition

When scientists say that group 7 elements are called, they are referring to a specific set of transition metals arranged in a column of the periodic table. In the standard modern arrangement, this group contains four elements: manganese, technetium, rhenium and bohrium. These elements are connected by their placement in the same vertical column and their shared tendency to exhibit multiple oxidation states, particularly in higher oxidation forms. The idea that “Group 7 elements are called” helps students recognise a common thematic group, even though their individual properties can be quite different as you move down the column. In common usage, you may also encounter the alternative description that Group 7 forms the manganese group, reflecting the first element in the sequence and a historical naming approach, though the modern nomenclature simply calls them Group 7 elements rather than a fixed mineralogical group name.

The Position of Group 7 in the Periodic Table

Group 7 sits in the middle region of the transition metals, nestled among the other groups of the d‑block. The IUPAC numbering system identifies Group 7 as the seventh column from the left in the 18‑group table. In older literature, you may see references to the VII B groups, which correspond to Group 7 in contemporary terms. The elements in this column share similar outer-shell electron configurations that end with half-filled or partially filled d‑subshells, a factor that underpins many of their chemical behaviours. Closer to the top of the group, manganese is a relatively abundant and well-known metal, while at the bottom end, bohrium is synthetic and exists only for fleeting moments in specialised laboratories. The phrase group 7 elements are called draws attention to their shared placement, but readers should also pay attention to the differences that arise as o atomic numbers rise and relativistic effects begin to shape the chemistry of the heavier members.

Manganese to Bohrium: A Quick Tour

• Manganese (Mn) is the lightest and most familiar member of Group 7. It is abundant in the Earth’s crust and has a long history of use in steelmaking, as an alloying element that improves toughness and durability. Mn exhibits a wide range of oxidation states, commonly from +2 up to +7, which gives rise to diverse chemistry both in inorganic compounds and biological contexts.
• Technetium (Tc) is the first element in Group 7 that is not found naturally on Earth in any appreciable amount. It is predominantly produced synthetically and is best known for its radioactive isotopes, especially technetium‑99m, which is widely used in medical imaging. The chemistry of Tc mirrors many features of the manganese group, but its radioactivity and availability drive different practical considerations.
• Rhenium (Re) sits higher in atomic weight and plays a crucial role in high‑temperature materials. It forms strong, heat‑resistant alloys and is used in aerospace engines and industrial catalysts. Its chemistry includes stable, high oxidation states such as +7, making it one of the more powerful oxidising metals in this group.
• Bohrium (Bh) is the heaviest and most elusive member of Group 7. It is synthetic and highly unstable, with isotopes that decay in a fraction of a second to seconds. Despite its fleeting existence, Bh provides valuable insight into relativistic effects and the theoretical chemistry of the heaviest transition metals.

The story of Group 7 elements is a story of discovery, from ancient metals to modern synthetic breakthroughs. Group 7 elements are called because they share a column in the periodic table that was first recognised in the early years of modern chemistry as a way to classify metals with similar chemical behaviours. Manganese has a long, well‑recorded history, known to ancient civilizations and widely used for centuries. Technetium, on the other hand, did not exist in detectable natural deposits and was discovered in 1937 by Carlo Perrier and Emilio Segrè, who identified a new element produced by the bombardment of molybdenum with deuterons. The element’s place in the seventh group of the periodic table was soon understood as part of the broader transition‑metal family. Rhenium’s discovery followed in the 1920s and 1930s, arising from work on refining molybdenum ores and alloys; its unusual chemistry and exceptional high temperature stability quickly found practical applications. Bohrium was the final member to join the group, created in 1981 by a team at the GSI Helmholtz Centre for Heavy Ion Research in Germany, by colliding bismuth with chromium ions and subsequently naming the new element in honour of Niels Bohr, the Nobel laureate physicist. Today, the phrase group 7 elements are called is used to connect these discovery narratives to a coherent block on the periodic table that continues to inspire modern research.

Group 7 elements are characterised by a variety of oxidation states and complex chemistries. When people discuss group 7 elements are called, they are often referring to their shared tendency to exhibit multiple oxidation states, a hallmark of transition metals. The lighter manganese tends to display +2, +3, +4, +6 and +7 oxidation states, with +7 appearing in oxoanions such as permanganate (MnO4−). Technetium and rhenium commonly reach high oxidation numbers, including +7 in their most oxidised oxoanions and fluorides, with technetium also showing a rich array of organometallic chemistry. Bohrium, though scarcely observed, is expected to follow the pattern of high oxidation states in theory, but practical chemistry is limited by its extreme radioactivity and very short half-lives. Across Group 7, the electronic configurations lead to substantial covalent character in bonding, and the metals form a range of complexes with ligands that stabilise different oxidation states. For students and enthusiasts, the phrase group 7 elements are called helps frame the idea that these elements share fundamental themes in their chemistry, even as each element presents its own peculiarities.

Electronic Structure and Periodic Trends

In terms of electronic structure, manganese has a [Ar] 3d5 4s2 configuration, which underpins its flexible chemistry. Technetium and rhenium fill the 4d and 5d subshells, respectively, giving rise to comparable chemistry with high oxidation states and a willingness to form oxoanions. Bohrium’s predicted electron configuration continues the trend into the seventh row, with relativistic effects becoming increasingly important as atomic number grows. The overarching theme is that, as you move from Mn to Bh, the chemistry becomes progressively heavier and more dominated by relativistic influences, while the core idea expressed by group 7 elements are called remains their shared identity as a standout quartet of transition metals in Group 7.

Understanding where these elements come from and how they are used helps illuminate why the group matters. Group 7 elements are called not only because of their position, but also because their practical applications reflect a mix of historical and modern needs. Manganese is widespread in the Earth’s crust and is extracted from ores such as pyrolusite, often used to improve steel’s hardness and durability. Technetium’s scarcity in nature makes it a laboratory and reactor product, with the world’s most important medical isotope being technetium‑99m, widely used in diagnostic imaging. Rhenium is rarer and is often recovered from molybdenum ores; it is indispensable in high‑temperature superalloys used in jet engines and in catalysts for industrial chemical processes. Bohrium is not used in any practical sense due to its extremely short half-lives; its value lies in fundamental research that tests the limits of chemical theory and relativistic effects. The combined story of these elements reflects the breadth of industrial, medical and theoretical chemistry that emerges when we consider the group as a whole and the idea that group 7 elements are called as a single family with diverse real‑world roles.

Industrial and Medical Relevance

From an industrial perspective, manganese’s role in steelmaking stands as a cornerstone of modern metallurgy. For medicine, technetium‑99m remains ubiquitous in diagnostic imaging due to its ideal half-life and gamma emission characteristics. Rhenium’s alloys extend the life and performance of high‑temperature components in aerospace engineering, while boron group researchers rely on bohrium as a theoretical touchstone for understanding the chemistry of the heaviest elements. When studying group 7, the practical implications of group 7 elements are called become evident through these varied applications and the ongoing exploration of what the heaviest member could teach us about nuclear and chemical behaviour in extreme conditions.

The bonding in Group 7 metals reflects their status as transition metals. The metals can form a range of compounds with ligands spanning halides, oxoanions and organometallic frameworks. In particular, Mn forms a variety of oxoanions such as permanganate MnO4− and manganate MnO4^2−, demonstrating strong oxidising ability in certain states. Tc forms covalent complexes with a spectrum of ligands, a trait that underpins its robust radiopharmaceutical and research significance. Re forms bonds in oxoanions and in complex carbides and nitrides; its chemistry is notable for resilience in high-temperature environments. Bh’s chemistry, while less fully characterised in practice, is studied in theoretical models that help chemists understand how heavy nuclei behave, including the effects of relativistic contraction and expansion on orbital energies. The common thread in discussing group 7 elements are called is that these metals collectively illustrate the diverse bonding patterns typical of transition metals, while also highlighting the unique aspects that appear as elements reach higher atomic numbers.

Manganese (Mn)

Manganese is the archetype of Group 7 elements are called and the most familiar of the quartet. Its wide natural abundance and flexible oxidation chemistry give Mn a central role in metallurgy and catalysis. The common oxidation states of Mn range from +2 to +7, and Mn compounds exhibit a rich colour chemistry, vivid in all the colours of manganese oxoanions and various coordination complexes. Mn is essential for life in trace amounts but can be toxic at higher levels, a reminder that transition metal chemistry often sits at the boundary between essential functions and safety concerns. In industry, manganese’s role in steel alloys improves strength and workability, while in environmental chemistry it plays a part in redox processes that can influence water chemistry and soil nutrients. In short, Mn embodies the everyday relevance of Group 7 elements are called and offers a clear first chapter for learners new to this group.

Technetium (Tc)

Technetium is the standout member of this group for being the lightest element that is predominantly radioactive and not found in significant natural deposits. Its most important isotope, technetium‑99m, is the workhorse of diagnostic medicine, enabling high‑precision imaging with relatively short radiation exposure. The chemistry of Tc mirrors that of Mn in many respects, with multiple oxidation states and a capacity to form oxoanions and coordination complexes. The practical reality of Tc is shaped by its production in nuclear reactors and its supply chain, where the availability of isotopes and the logistics of handling radioactivity dictate how it is deployed in medicine and research laboratories. When you encounter the phrase group 7 elements are called in textbooks, Tc often serves as a key example of how a group’s chemistry translates into real‑world technology.

Rhenium (Re)

Rhenium is famed for its extraordinary high‑temperature stability and resilience in harsh chemical environments. It is widely used in superalloys for jet engines, where performance at elevated temperatures is crucial. In chemical synthesis, Re participates in catalytic processes that are essential to modern industry. The +7 oxidation state is particularly significant for Re chemistry, although it can access a spectrum of oxidation numbers in compounds. The presence of rhenium in alloys and catalysts highlights the practical side of Group 7 elements are called, showing how alignment within a single group underpins applications in aerospace, energy and chemical engineering.

Bohrium (Bh)

Bohrium stands apart in this quartet because its existence is entirely synthetic and its isotopes are remarkably short‑lived. The study of Bh is primarily of theoretical and investigative value, providing a laboratory to test quantum mechanical models and relativistic effects in heavy elements. Although Bh cannot be exploited in everyday applications, its study contributes to a deeper understanding of the periodic trends that define group 7 elements are called and broadens the horizons of heavy‑element chemistry. Researchers continue to refine predictions of Bh’s chemical behaviour, which in turn informs models for other superheavy elements yet to be discovered or synthesised.

Despite their differences, the four members of Group 7 share several core properties that justify their grouping. These common characteristics help explain why group 7 elements are called a coherent family in chemistry texts.

• High tendency to form multiple oxidation states, particularly higher oxidation states at +4 to +7 for the heavier elements, which underpins diverse chemistry and catalysis.
• Progressive increase in atomic weight and electron shell filling as you move down the group, leading to changes in metallic character and bonding tendencies.
• Dominance of d‑block chemistry, with valence electrons largely found in the d‑subshell, giving rise to variable coordination geometries and complex formation.
• Potential for oxo and oxoanions across the group (e.g., MnO4− and related species), highlighting the strong oxidising capabilities of these metals in certain states.

In practice, the expression group 7 elements are called captures the essential identity of these metals as a panel of central transition metals with significant industrial and scientific importance, while also acknowledging the differences in availability, stability and application across Mn, Tc, Re and Bh.

As with many transition metals, safety considerations depend on the particular element and its compounds. Manganese compounds can be toxic if ingested or inhaled in significant quantities, though Mn itself is an essential trace element for humans in proper amounts. Technetium’s radioactivity means that handling Tc isotopes requires specialised facilities, shielding and monitoring to protect workers and patients. Rhenium compounds pose chemical hazards that demand careful handling and disposal practices, particularly in industrial settings. Bohrium, being highly radioactive and short‑lived, is studied under strict regulatory controls within well‑equipped facilities. For learners exploring group 7 elements are called, it is important to recognise that chemical properties are inseparable from safety practices, and responsible chemistry education emphasises risk assessment and ethical use of materials from this group.

The study of Group 7 remains vibrant because it links fundamental theory to practical outcomes. The elements illustrate core themes in inorganic chemistry, including electron configuration, oxidation state chemistry, and the interplay of relativistic effects in heavy elements. They also connect to real‑world applications — from Mn in steel and MnO4− in analytical chemistry to Tc’s critical role in medical imaging and Re’s place in high‑tech materials. In higher education, group 7 elements are called as a basis for exploring catalytic cycles, coordination chemistry, and the curious behaviour of superheavy elements in the context of the periodic table’s structure and evolution. The group thus serves as a compelling case study in how a seemingly narrow niche can illuminate broad scientific principles.

What are the Group 7 elements called?

The Group 7 elements are called the manganese group in some historical references, but in modern terminology they are simply referred to as Group 7 elements. The quartet comprises manganese (Mn), technetium (Tc), rhenium (Re) and bohrium (Bh).

Why is technetium so important despite being rare?

Technetium is important because its most widely used isotope, technetium‑99m, provides critical imaging capabilities in medicine. Its availability through reactors and its perfect radiological properties for diagnostic scans make Tc a cornerstone of nuclear medicine, even though it is not found in nature in meaningful quantities.

Where do these elements come from?

Manganese is common in the Earth’s crust. Technetium is synthetic, produced in nuclear reactors or particle accelerators. Rhenium is rarer but occurs in certain ores like molybdenite and is extracted as a by‑product of molybdenum processing. Bohrium is purely synthetic and created in laboratory settings for research purposes.

What makes Bohrium unique within Group 7?

Bohrium is unique for being the heaviest member of the group and for its very short‑lived, radioactive isotopes. Its chemistry is primarily of theoretical and experimental interest, rather than practical use, which distinguishes Bh from Mn, Tc, and Re in terms of real‑world applications.

In summary, Group 7 elements are called a coherent set of transition metals occupying a distinct column in the periodic table. They illustrate how position in the table guides expectations about chemistry, from Mn’s versatile oxidation states to Tc’s medical significance, Re’s high‑temperature robustness, and Bh’s role as a laboratory protagonist in the chemistry of the heaviest elements. The phrase group 7 elements are called serves as a gateway to understanding how scientists group elements to reflect shared properties while still acknowledging each member’s unique story. For students, educators and science enthusiasts, recognising this group helps demystify the periodic table’s regularities and the exceptions that make inorganic chemistry endlessly fascinating.