113
Nh
Post-transition metal

Nihonium

Atomic number 113 · Period 7 · Block P

Nh · Nihonium
Mendeleev.com

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.

scientific research
Standard atomic weightNo standard atomic weight

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.

Worth remembering
Nihonium is synthetic, very short-lived and studied atom by atom in nuclear-physics laboratories

Scientific sources

Element identity
Atomic number113
Group13
Period7
BlockP
CategoryPost-transition metal
PhaseUnknown