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Scandium

Chemical symbol: Sc

Atomic number: 21

Atomic mass: 44.956

Group: 3

Period: 4

Element category: Transition metals

Block: d-block

Number of protons: 21

Number of electrons: 21

Number of neutrons (in the most common isotope): 24

Sources:

  • Knowledge Encyclopedia (book)

  • SCIENCIA (book)

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