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Element story

Nihonium

Atomic number 113 means that every Nihonium nucleus contains 113 protons. That proton count is the element's identity: change it and you no longer have Nihonium.

Start with the nucleus

Atomic number 113 means that every Nihonium nucleus contains 113 protons. That proton count is the element's identity: change it and you no longer have Nihonium.

Nihonium (Nh) is chemical element 113. It belongs to the post-transition metals, and its reference state at room temperature is not firmly established. Those basic facts are a useful starting point for its chemistry and applications.

In practice, it turns up most often in 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 113 means that every Nihonium nucleus contains 113 protons. That proton count is the element's identity: change it and you no longer have Nihonium.

Keep exploring

→ Nihonium · Atomic structure · Periodic trends

113NhNihonium
Nihonium · Nh · Z = 113

Nihonium (Nh) is chemical element 113. It belongs to the post-transition metals, and its reference state at room temperature is not firmly established. Those basic facts are a useful starting point for its chemistry and applications.

Understanding the element

Nihonium (Nh) is chemical element 113. It belongs to the post-transition metals, and its reference state at room temperature is not firmly established. 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 scientific research.

What its position in the table tells us

Nihonium sits in period 7, group 13 and the P block. That location is useful because neighbouring elements often share trends in valence electrons, oxidation states and bonding behaviour.