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Element story

Uranium

Atomic number 92 means that every Uranium nucleus contains 92 protons. That proton count is the element's identity: change it and you no longer have Uranium.

Start with the nucleus

Atomic number 92 means that every Uranium nucleus contains 92 protons. That proton count is the element's identity: change it and you no longer have Uranium.

Uranium (U) is chemical element 92. It belongs to the actinoids, 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 nuclear energy, glass color and scientific research.

See the atom

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

What this number means

Atomic number 92 means that every Uranium nucleus contains 92 protons. That proton count is the element's identity: change it and you no longer have Uranium.

Keep exploring

→ Uranium · Atomic structure · Periodic trends

92UUranium
Uranium · U · Z = 92

Uranium (U) is chemical element 92. It belongs to the actinoids, 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

Uranium (U) is chemical element 92. It belongs to the actinoids, 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 nuclear energy, glass color and scientific research.

What its position in the table tells us

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