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What are did facts about atomic number 20?

What are did facts about atomic number 20?
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What are did facts about atomic number 20?

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User MohannadNaj
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Basic Calcium FactsName: CalciumAtomic Number: 20Element Symbol: CaGroup: 2Period: 4Block: sElement Family: Alkaline EarthAtomic Mass: 40.078(4)Electron Configuration: [Ar]4s2
Full: 1s22s22p63s23p64s2 (full)
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User Imdad
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