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Atomic Structure

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Atomic Structure

  1. 1. Atomic Structure FAQs
  2. 2. Atomic StructureWhat is the order of adding removing electronsfor transition elements?• Fill up 4s before 3d. e.g. Ti: 1s2 2s2 2p6 3s2 3p6 3d2 4s2• Remove from 4s before 3d. e.g. Ti+: 1s2 2s2 2p6 3s2 3p6 3d2 4s1
  3. 3. Atomic StructureWhen writing electron configuration, can I justwrite e.g. 2p or do I need to show 2px 2py 2pz?• When asked for electron configuration, you do not have to write out the subshells. e.g. O: 1s2 2s2 2p4• BUT when ask to explain for certain trends related to how the electrons are placed in the subshells, you NEED to show px, py and pz. e.g. O: 1s2 2s2 2px2 2py1 2pz1