SORRY, YOU WERE INCORRECT.

HERE IS THE EXPLANATION OF THE QUESTION

 

#18b. What is the electron configuration for Cobalt II (Co+2)?

    1. 1s22s22p63s23p64s23d7 - This answer would be for Cobalt 0. In this answer no electrons have been lost from the 3d energy level.
    2. 1s22s22p63s23p64s24d5 - This answer is wrong because after the 4s energy level it should be the 3d energy level, remember drag your finger across the chart and the first row of d's is the 3 energy level.
    3. 1s22s22p63s23p63d7 - This answer is wrong because the 4s energy level is missing.
    4. 1s22s22p63s23p64s23d5 : In this problem Cobalt has a charge of +2, therefore it has lost two electrons from the 3d energy level. The diagram should look like this.

IT LOOKS LIKE YOU'RE STILL HAVING SOME TROUBLE. NUMBER 19 ALSO DEALS WITH ELECTRON CONFIGURATIONS SO TRY IT BUT WHEN YOU ARE DONE WITH THIS REVIEW REREAD PAGES 94-99, AND PLEASE COME SEE ME!!!!!!!!!!

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GREAT, YOU GOT THIS TIME!!

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