Nihonium

Category: Post-transition metal

Atomic Number: 113

Period: 7 | Group: 13

Block: p-block

113
Nh
284.000

Description

The first element discovered and named by an Asian research team.

Physical Properties

Property Value
Phase at STP Solid
Density N/A
Melting Point 700.00 K (426.85 °C)
Boiling Point 1400.00 K (1126.85 °C)
Heat Capacity N/A

Atomic Properties

Property Value
Atomic Mass 284.0000 u
Electronegativity (Pauling) N/A
Oxidation States -1, +1, +3, +5
Electron Configuration

Discovery & History

Discovered By Unknown
Discovery Year 2004
Named After Nihon, "Japan"

RIKEN Research Team, Japan (2004-2012)

Historic Achievement: Nihonium became Japan's first discovered chemical element, representing a monumental achievement for Japanese science and earning recognition as one of the most significant scientific discoveries of the 21st century.

RIKEN Leadership: The discovery team, led by Kosuke Morita at RIKEN's Nishina Center for Accelerator-Based Science, spent nearly a decade perfecting the synthesis techniques required to create this superheavy element. Their persistence through years of failed attempts exemplifies scientific dedication.

Breakthrough Experiments: Between 2004 and 2012, the team successfully created three nihonium atoms by bombarding bismuth-209 targets with zinc-70 ions in their linear accelerator. Each successful synthesis required months of continuous operation and precise calibration of experimental conditions.

International Recognition: The International Union of Pure and Applied Chemistry (IUPAC) officially recognized RIKEN's discovery in 2015, granting Japan the honor of naming element 113. The name "nihonium" derives from "Nihon," the Japanese word for Japan.

Technological Innovation: The discovery required developing new detection systems capable of identifying single atoms among billions of background particles. These innovations advanced nuclear physics instrumentation and data analysis techniques worldwide.

Global Scientific Impact: Nihonium's discovery validated theoretical predictions about superheavy element synthesis and opened new avenues for exploring the periodic table's limits. The achievement inspired increased international collaboration in superheavy element research.

Cultural Significance: Beyond scientific importance, nihonium represents Japan's contribution to fundamental human knowledge, inspiring pride in Japanese scientific capabilities and motivating future generations of researchers.

Isotopes

ISOTOPE Neutrons Natural Abundance Half-life Decay Mode
Nh-282 169 - ~0.07 sec α
Nh-284 171 - 0.97 sec α
Nh-285 172 - 0.93 sec α, SF
Nh-286 173 - 9.5 sec α
Nh-290 177 - ~2 sec α, SF

Data: IAEA Nuclear Data Section, LiveChart of Nuclides, ground-state evaluations, retrieved October 10, 2026. Abundance is the share of atoms in the natural element; a dash means the isotope has no standard natural abundance.

Applications & Uses

Research Applications

Nuclear Physics Research: Nihonium serves as a crucial stepping stone in understanding superheavy element synthesis and decay patterns. It was first made by bombarding bismuth-209 targets with zinc-70 ions, and it also forms in the decay of moscovium made from americium-243 and calcium-48, providing insights into nuclear reaction mechanisms at very high energies.

Island of Stability Studies: As element 113, nihonium occupies a strategic position approaching the theorized "island of stability" where superheavy elements might exist for longer periods. Research focuses on determining if nihonium exhibits enhanced stability compared to neighboring elements, potentially validating theoretical predictions about nuclear shell closures.

Fundamental Chemistry Investigations: Despite its short half-life, nihonium research contributes to understanding how relativistic effects influence chemical bonding in superheavy elements. Theoretical calculations suggest nihonium might behave similarly to thallium, but with significant deviations due to relativistic electron orbital contractions.

Advanced Detection Technology: Creating nihonium requires advanced particle detection systems and sophisticated data analysis techniques. These technological developments advance our capabilities in nuclear instrumentation, benefiting fields from medical imaging to materials science.

International Scientific Collaboration: Nihonium research exemplifies global scientific cooperation, with teams from RIKEN (Japan), GSI (Germany), and other institutions sharing knowledge and resources to push the boundaries of element synthesis.

Educational Impact: As Japan's first discovered element, nihonium inspires new generations of scientists and demonstrates how persistent research can achieve seemingly impossible goals, motivating continued exploration of the unknown.

Abundance

Earth's Crust N/A
Universe N/A