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Chemistry
Milo Vaughan
14 August, 11:06
What are did facts about atomic number 20?
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Jordin Rivera
14 August, 14:39
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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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