Mendeleev
Periodic table · chemistry · physics
Element story

Rhenium

Atomic number 75 means that every Rhenium nucleus contains 75 protons. That proton count is the element's identity: change it and you no longer have Rhenium.

Start with the nucleus

Atomic number 75 means that every Rhenium nucleus contains 75 protons. That proton count is the element's identity: change it and you no longer have Rhenium.

Rhenium (Re) is chemical element 75. 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 jet engines, catalysts and thermocouples.

See the atom

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

What this number means

Atomic number 75 means that every Rhenium nucleus contains 75 protons. That proton count is the element's identity: change it and you no longer have Rhenium.

Keep exploring

→ Rhenium · Atomic structure · Periodic trends

75ReRhenium
Rhenium · Re · Z = 75

Rhenium (Re) is chemical element 75. 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

Rhenium (Re) is chemical element 75. 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 jet engines, catalysts and thermocouples.

What its position in the table tells us

Rhenium sits in period 6, group 7 and the D block. That location is useful because neighbouring elements often share trends in valence electrons, oxidation states and bonding behaviour.