Youtor
>> YOUR LINK HERE: ___ http://youtube.com/watch?v=A74L4E2E9bI
To write the configuration for the Cobalt ions, first we need to write the electron configuration for just Cobalt (Co). We first need to find the number of electrons for the Co atom (there are 27 electrons) using the Periodic Table. When we write the configuration, we'll put all 27 electrons in orbitals around the nucleus of the Cobalt atom. • In this video we'll use the Periodic Table to help us write the notation for Cobalt. Alternatively you can use a chart showing how the orbitals fill ( • Using the Electron Configuration Chart ). • Either way, the Cobalt electron configuration will be 1s2 2s2 2p6 3s2 3p6 3d7 4s2 • Note that when writing the electron configuration for an atom like Co, the 3d is usually written before the 4s. Both of the configurations have the correct numbers of electrons in each orbital, it is just a matter of how the electronic configuration notation is written (see below for an explanation why). • For the Co2+ ion we remove two electrons from 4s2 leaving us with: • 1s2 2s2 2p6 3s2 3p6 3d7 • For the Co3+ ion we remove a total of three electrons (two from the 4s2 and one form the 3d7) leaving us with • 1s2 2s2 2p6 3s2 3p6 3d6 • • 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... • • Order of d and s Orbital Filling: https://eic.rsc.org/Coature/the-troub... • The configuration notation provides an easy way for scientists to write and communicate how electrons are arranged around the nucleus of an atom. This makes it easier to understand and predict how atoms will interact to form chemical bonds.
#############################
