Write the electron configuration of Co3+ (Cobalt 3+ ion) and please explain why.

Question:

Write the electron configuration of Co{eq}^{3+} {/eq} (Cobalt 3+ ion) and please explain why.

Electronic Configuration of an Ion :

Ion can be of two types : cation and an anion .

The electronic configuration of an ion depends upon the number of electrons gained or lost .

Answer and Explanation:

The atomic number of Cobalt is 27 . Its electronic configuration is :

{eq}1s^{2}2s^{2}2p^{6}3s^{2}3p^{6}3d^{7}4s^{2} {/eq}

The given ion is {eq}Co^{3+} {/eq} and it has lost three electrons . After loosing three electrons, the electronic configuration becomes :

{eq}1s^{2}2s^{2}2p^{6}3s^{2}3p^{6}3d^{6}4s^{0} {/eq}


Learn more about this topic:

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Electron Configurations in the s, p & d Orbitals

from MCAT Test: Practice and Study Guide

Chapter 48 / Lesson 8
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