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General Chemistry - Standalone boo...

11th Edition
Steven D. Gammon + 7 others
ISBN: 9781305580343

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Chapter
Section
BuyFindarrow_forward

General Chemistry - Standalone boo...

11th Edition
Steven D. Gammon + 7 others
ISBN: 9781305580343
Textbook Problem

In Section 9.8, several resonance formulas of BF3 were discussed. Which of these would be favored based on the concept of formal charge? Explain how you arrived at this answer. Does this answer agree with the chemistry described in the text?

Interpretation Introduction

Interpretation:

The favored resonance formulas of given molecules has to be explained using formal charge.

Concept introduction:

Electronic configuration:   Electronic configuration is the arrangement of electrons that revolves around the nucleus in a specific orbits.  The electrons arranged in lower energy orbital level to higher level orbital.

Every stable molecule has eight electrons in its outer most shell and this is based on octet rule.  If Outer most shell is completely filled or half field shell or empty then they are more stable

Formal charge

FC=[valence electrons] – [electrons in lone pairs + 1/2 the number of bonding electrons].

Explanation

The resonance formula favored for BF3

Let us consider the above molecule in which the central atom is boron.  All of the fluorine atoms have formal charges of 0

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