Information valid for Uns-Ns-262 unless otherwise noted

Basic Information

Symbol: Uns, Ns
Atomic Number: 107
Mass: (262.0)
Melting Point: Unknown
Boiling Point: Unknown
Number of Protons/Electrons: 107
Number of Neutrons: 155
Classification: Transition Metal
Crystal Structure: Unknown
Density @ 293 K: Unknown
Color: Unknown
IUPAC Name: Bohrium (Bh)
ACS Name: Nielsbohrium (Ns)
Due to the naming dispute over this element, this site will use the IUPAC Systematic Naming Scheme

Atomic Structure

[Bohr Model of Unnilseptium]
Number of Energy Levels: 7

  1. First Energy Level: 2
    Second Energy Level: 8
    Third Energy Level: 18
    Fourth Energy Level: 32
    Fifth Energy Level: 32
    Sixth Energy Level: 13
    Seventh Energy Level: 2


Isotope Half Life
Uns-261 0.01 seconds
Uns-262 0.1 seconds
Uns-262m 0.0080 seconds


Date of Discovery: 1976
Discoverer: Soviets at Dubna
Name Origin: Un (one) nil (zero) sept (seven) ium
Uses: No uses known
Obtained From: Man-made