Environmental Chemistry
Environmental chemistry.com: Periodic Table Holmium
As the name of this site implies, this is a huge reference site for elemental information. Whether you are looking for properties or isotopes, this site probably has what you need. Images of structure and electron energy level can be...
TED Talks
Ted: Ted Ed: Holmium: Periodic Table of Videos
The team at Periodicvideos has created a TED-Ed Lesson for every element of the periodic table. Holmium, element number 67, is the king of magnetism. [0:38]
Web Elements
Web Elements Periodic Table: Holmium
Provides a great deal of elemental information about the chemical element holmium. There are audio files demonstrating the correct pronunciation of the element name, pictures showing the electron shells, information on isotopes,...
Florida-Spectrum Environmental Services
Florida Spectrum: Chemical Fact Sheet: Holmium
This printable element fact sheet contains information on the properties, uses and proper disposal of the chemical element holmium.
Other
Nautilus: Holmium
Here you will find a series of clear pages, dedicated to elemental information specific to the element of holmium. Pages include history, occurrence, biological action, and properties.