MR. ROY GARDNER gave an interesting paper on “A Method of Setting out the Classification of the Elements” at a recent meeting of the New Zealand Institute. The paper included the accompanying Table, ...
Neutral Calcium (Ca): 20 protons and 20 electrons. Electron configuration: 1s² 2s² 2p⁶ 3s² 3p⁶ 4s². Calcium Ion (Ca²⁺): 20 ...
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