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?assignment problemit MasteringCherr http://session.masteringchemistry.com/myct/ temVie File Edit View Favorites Tools Help x Google Page. Safety. Tools. @.90 CHEM 1311 Fall 2014 Chanter 8 Electron Configurations of Atoms Electron Configurations of Atoms An atom consists of a small, positively charged nucleus, surrounded by negatively charged electrons. We organize the electrons in a logical manner. As the atomic number increases, electrons are added to the subshells according to their energy. Lower energy subshells fill before higher energy subshells The order of filling is 1s, 2s, 2p, 3s, 3p, 4s, 3d, 4p, 5s, 4d, 5p, 6s, 4f, 5d, 6p, 7s, 5f, 6d, 7p can be used to help you remember the order.

Explanation / Answer

si(z-14)

1S62 2S^2 2P^6 3S^2 3P^2

Cu

1S^2 2S^2 2P^6 3S^2 3P^6 4S^2 3d^9

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