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Half Equations at Electrodes Higher for AQA GCSE Chemistry
>> YOUR LINK HERE: ___ http://youtube.com/watch?v=5BLi66Mnkbg
In this video we will write the electron configuration for I- the Iodide ion. We’ll also look at why Iodine forms a 1- ion and how the electron configuration for I- is the same as the Noble gas Krypton . • To begin with, Iodine (I) has an electronic configuration of 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p5 . • To learn more about writing electron configurations see: • • Introduction to Writing Electron Configurations: • Introduction to Electron Configurations • • Electron Configurations Chart: • Using the Electron Configuration Chart • • Writing Electron Configs Using only the Periodic Table: • Writing Electron Configurations Using... • When Iodine forms an ion it gains one valence electron. Since electrons are negative, gaining one electron results in I having a 1- charge. • To write the electron config all we have to do is add one electron from the configuration for I. That gives us with: • 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 • And that is the electron configuration for I- , the Iodide ion.
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