Name: Dubnium
Symbol: Db
Atomic Number: 105
Atomic Mass: (262.0) amu
Melting Point: Unknown
Boiling Point: Unknown
Number of Protons/Electrons: 105
Number of Neutrons: 157
Crystal Structure: Unknown
Density @ 293 K: Unknown
Color: Unknown
Other Names: Unnilpentium (Unp), Joliotium (Jl), Hahnium (Ha)
Atomic Structure
![[Bohr Model of Dubnium]](b0105.gif) |
Number of Energy Levels: 7 First Energy Level: 2 Second Energy Level: 8 Third Energy Level: 18 Fourth Energy Level: 32 Fifth Energy Level: 32 Sixth Energy Level: 11 Seventh Energy Level: 2 |
Isotopes
| Isotope | Half Life |
| Db-258 | 4.2 seconds |
Facts
Date of Discovery: 1970Discoverer: Albert Ghiorso
Name Origin: After Dubna, Russia
Uses: No uses known
Obtained From: Man-made
Information provided by: http://www.chemicalelements.com