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12 September, 09:56

What are did facts about atomic number 20?

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  1. 12 September, 11:54
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    Basic Calcium Facts

    Name: Calcium

    Atomic Number: 20

    Element Symbol: Ca

    Group: 2

    Period: 4

    Block: s

    Element Family: Alkaline Earth

    Atomic Mass: 40.078 (4)

    Electron Configuration: [Ar]4s 2

    Full: 1s22s22p63s23p64s2 (full)
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