Chemistry, 21.02.2020 04:29 amadileaks

Calcium has an atomic number of 20 and 2 valence electrons. Oxygen has an atomic number of 8 and 6 valence electrons. Neon has an atomic number of 10 and 8 valence electrons. Explain how the placement of these three elements on the periodic table compares and why they are placed where they are relative to each other.

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Calcium has an atomic number of 20 and 2 valence electrons. Oxygen has an atomic number of 8 and 6 v...

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