How to Read Write Electron Configurations Reading Electron

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How to Read & Write Electron Configurations

How to Read & Write Electron Configurations

Reading Electron Configurations § Count the total number of super scripts which is equal

Reading Electron Configurations § Count the total number of super scripts which is equal to the number of electrons. § Is it a neutral atom? § YES: Then the number of electrons=atomic number § No: A charge must be given to determine the element § Positive charge (add this number to your number found in step 1 and compare to atomic #) § Negative charge (subtract this number from your number found in step 1 and compare to atomic #) 1 s 22 p 63 s 23 p 6 What element is this if this is a neutral Atom What element is this if the atom has a -2 charge What element is this if the atom has a +1 charge

Writing Electron Configurations § How many electrons are in your atom (is it neutral

Writing Electron Configurations § How many electrons are in your atom (is it neutral or charged) § Remember sub orbitals hold specific number of electrons. § S holds 2 electrons § P holds 6 electrons § D holds 10 electrons § F holds 14 electrons § Follow the electron energy level diagram or the diagonal rule to fill orbitals in the correct order until you have no electrons left

Writing Electron Configuration Practice Sodium Phosphorus Fluorine Calcium Challenge Iron (Fe) Tin (Sn) Super

Writing Electron Configuration Practice Sodium Phosphorus Fluorine Calcium Challenge Iron (Fe) Tin (Sn) Super Challenge Uranium

Noble Gas Configuration Short Cut for Electron Configurations § Short hand for atoms with

Noble Gas Configuration Short Cut for Electron Configurations § Short hand for atoms with long configurations or if your lazy § Ex. Lead (Pb) 82 electrons!!!! 1 s 22 p 63 s 23 p 64 s 23 d 104 p 65 s 24 d 105 p 66 s 24 f 145 d 106 p 2 OR [Xe]6 s 24 f 145 d 106 p 2 § Find the closest noble gas with less electrons than your element § Check out your periodic table to determine which P energy level it is in (n=1 -7) § Place the noble element symbol in brackets [] and start filling at the next S shell Practice with: Aluminum & Krypton