FAQs About the word atomic number 21

原子序數為21

a white trivalent metallic element; sometimes classified in the rare earth group; occurs in the Scandinavian mineral thortveitite

No synonyms found.

No antonyms found.

atomic number 20 => 原子序數 20, atomic number 2 => 二號原子數, atomic number 19 => 原子序數19, atomic number 18 => 原子序數18, atomic number 17 => 原子序數17,