In the wee hours of the late 17th century, Isaac Newton could be found locked up in his laboratory prodding the secrets of nature. Giant plumes of green smoke poured from cauldrons of all shapes and ...
Neutral Calcium (Ca): 20 protons and 20 electrons. Electron configuration: 1s² 2s² 2p⁶ 3s² 3p⁶ 4s². Calcium Ion (Ca²⁺): 20 ...
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