As discussed in previous lessons, there are many different kinds of elements. The atoms of these elements are comprised of a nucleus surrounded by orbital electrons. The nucleus consists of protons and neutrons. Each element has a specific number of protons, while the number of neutrons may vary, resulting in various isotopes of the same element.
Office of Environment, Health, Safety & Security
March 11, 2009
Estimated Read Time min
DOE-HDBK-1122-99 Module 1.06, Fundamental Academic Training Instructor's Guide Phase I; Module 1.06, Radioactivity and Radioactive Decay
| Subjects: | |
| ID: | DOE-HDBK-1122-99 Module 1.06 |
| Type: | Handbook |
| Senior Line Manager: | Technical Standards Program |
| Senior Line Manager Org: | Not Provided |
| OPI: | EH - Office of Environment, Safety and Health |
| Preparing Activity: | Technical Standards Program |
| Status: | Archive |
| Approved Date: | Jul 21, 1999 |
| Last Update: | Mar 11, 2009 |
| DNFSB Interest: | No |
| Invoked Standard: | No |