atomic number 73 (0 synonym found)

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Definition of atomic number 73:

(n) : a hard gray lustrous metallic element that is highly corrosion-resistant; occurs in niobite and fergusonite and tantalite

Definition of atomic number 73:

(n) : a hard gray lustrous metallic element that is highly corrosion-resistant; occurs in niobite and fergusonite and tantalite

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