Atomic Number 21 — synonyms, definition

1. atomic number 21 (Noun)

2 synonyms
Sc scandium
1 definition

atomic number 21 (Noun) — A white trivalent metallic element; sometimes classified in the rare earth group; occurs in the Scandinavian mineral thortveitite.

2 types of
metal metallic element
1 part of
thortveitite
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