These chemical elements are usually synthetically prepared. Most cannot be found in nature.
Although technetium, promethium, astatine, neptunium, and plutonium do occur in nature, they are very rare and were all discovered by synthesis.
Subcategories
This category has only the following subcategory.
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Pages in category "Synthetic elements"
The following 31 pages are in this category, out of 31 total. This list may not reflect recent changes.
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These chemical elements are usually synthetically prepared. Most cannot be found in nature.
Although technetium, promethium, astatine, neptunium, and plutonium do occur in nature, they are very rare and were all discovered by synthesis.
Subcategories
This category has only the following subcategory.
H
Pages in category "Synthetic elements"
The following 31 pages are in this category, out of 31 total. This list may not reflect recent changes.