How many electrons are in the expanded valence in I₃^-? A) 12 B) 6 C) 10 D) 14 E) 8

Question

Quizplus · Accepted Answer

To find the expanded valence, we need to count the number of valence electrons and add any electrons from the outer shell of adjacent atoms.

I: 1 electron in the outer shell 
S: 6 electrons in the outer shell 
U: 1 electron in the outer shell 
B: 3 electrons in the outer shell 
F: 7 electrons in the outer shell 
P: 5 electrons in the outer shell

Adding these up, we get a total of 23 valence electrons. Looking at the molecule, we see that there is a single negative charge, which means there is one extra electron. Therefore, the expanded valence would be 24 electrons.

Therefore, the correct answer is C: 10 electrons in the expanded valence.

How Many Electrons Are in the Expanded Valence in I3-

How Many Electrons Are in the Expanded Valence in I₃^-