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| physical object > natural object > collection of particles > phase of matter > solid > metal > actinide > thorium | 
| thorium comparison table | |||||||||
| Subject | has ocean residence time | has occurrence | is a kind of | has atomic number | has group | has image | has filling orbital | has definition | has ocean concentration | 
|---|---|---|---|---|---|---|---|---|---|
| actinide | inner transition metal | 89 to 103 | a column number in the table of the elements | 5f | Element with atomic number between 89 (Actinium) and 103 | ||||
| scavenged oceanic element | 103 years or less | ocean | oceanic element | decreasing with depth | |||||
| thorium | 50 years | ocean | scavenged oceanic element | 89 to 103 | a column number in the table of the elements | ![]()  | 5f | decreasing with depth | 
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