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Question on 2A. 17 part c

Posted: Sat Oct 26, 2019 9:40 pm
by Alvaro Chumpitaz 4D
Predict the number of valence electrons present for each of the following ions
c) Co (3+)
How can you predict the number of valence electrons for a transition metal?

Re: Question on 2A. 17 part c

Posted: Sat Oct 26, 2019 10:14 pm
by JChen_2I
Cobalt is in group 9 so it has 9 valence electrons in its neutral state. Then because the charge the 3+, it means there are 3 less electrons than it does during its neutral state so there are 6 valence electrons.