Chemical Elements.com - Dubnium (Db)

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Basic Information | Atomic Structure | Isotopes | Related Links | Citing This Page

Basic Information

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
Classification: Transition Metal
Crystal Structure: Unknown
Density @ 293 K: Unknown
Color: Unknown
Other Names: Unnilpentium (Unp), Joliotium (Jl), Hahnium (Ha)

Atomic Structure

Number of Energy Levels: 7

First Energy Level:

Second Energy Level:

Third Energy Level:

Fourth Energy Level:

Fifth Energy Level:

Sixth Energy Level:

Seventh Energy Level:

Isotopes

Isotope	Half Life
Db-258	4.2 seconds

Facts

Date of Discovery: 1970
Discoverer: Albert Ghiorso
Name Origin: After Dubna, Russia
Uses: No uses known
Obtained From: Man-made

MLA Format for Citing This Page

Bentor, Yinon. Chemical Element.com - Dubnium. <http://www.chemicalelements.com/elements/db.html>.

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