Problem: Part B. Two possible electron-dot structures are shown for the cyanate ion, NCO− . What can you conclude about how favorable the structures are?a. Structure A is more favoredb. Structure B is more favoredc. The structure are equally favoredFormal charge (FC) keeps track of which electrons an atom "owns" in a chemical bond with the equationFC =(valence e- in free atom) - (valence e- in bonded atom)When more than one valid Lewis structure can be drawn for a particular molecule, formal charge is used to predict the most favorable structure.A bonded atom is considered to "own" all its nonbonding electrons but only half of the bonding electrons because these are shared with another atom. Therefore, the formal charge formula can be rewritten as follows:FC =(valence e- in free atom) - [nonbonding e- shown + 12bonding e- shown]

FREE Expert Solution
Problem Details

Part B. Two possible electron-dot structures are shown for the cyanate ion, NCO . What can you conclude about how favorable the structures are?

a. Structure A is more favored

b. Structure B is more favored

c. The structure are equally favored


Formal charge (FC) keeps track of which electrons an atom "owns" in a chemical bond with the equation

FC =(valence e- in free atom) - (valence e- in bonded atom)

When more than one valid Lewis structure can be drawn for a particular molecule, formal charge is used to predict the most favorable structure.

A bonded atom is considered to "own" all its nonbonding electrons but only half of the bonding electrons because these are shared with another atom. Therefore, the formal charge formula can be rewritten as follows:

FC =(valence e- in free atom) - [nonbonding e- shown + 12bonding e- shown]

Frequently Asked Questions

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Resonance Structures concept. You can view video lessons to learn Resonance Structures. Or if you need more Resonance Structures practice, you can also practice Resonance Structures practice problems.