Mendeleev
Periodic table · chemistry · physics
Element story

Manganese

Atomic number 25 means that every Manganese nucleus contains 25 protons. That proton count is the element's identity: change it and you no longer have Manganese.

Start with the nucleus

Atomic number 25 means that every Manganese nucleus contains 25 protons. That proton count is the element's identity: change it and you no longer have Manganese.

Manganese (Mn) is chemical element 25. It belongs to the transition metals, and its reference state at room temperature is a solid. Those basic facts are a useful starting point for its chemistry and applications.

In practice, it turns up most often in metallurgy and steel, batteries and biology.

See the atom

Conceptual visual: electron shells are a learning aid, not a literal picture of quantum orbitals.

What this number means

Atomic number 25 means that every Manganese nucleus contains 25 protons. That proton count is the element's identity: change it and you no longer have Manganese.

Keep exploring

→ Manganese · Atomic structure · Periodic trends

25MnManganese
Manganese · Mn · Z = 25

Manganese (Mn) is chemical element 25. It belongs to the transition metals, and its reference state at room temperature is a solid. Those basic facts are a useful starting point for its chemistry and applications.

Understanding the element

Manganese (Mn) is chemical element 25. It belongs to the transition metals, and its reference state at room temperature is a solid. Those basic facts are a useful starting point for its chemistry and applications.

Where do we encounter it?

In practice, it turns up most often in metallurgy and steel, batteries and biology.

What its position in the table tells us

Manganese sits in period 4, group 7 and the D block. That location is useful because neighbouring elements often share trends in valence electrons, oxidation states and bonding behaviour.