   Chapter 8, Problem 13PS

Chapter
Section
Textbook Problem

Determine the formal charge on each atom in the following molecules or ions: (a) N2H4 (b) PO43− (c) BH4− (d) NH2OH

(a)

Interpretation Introduction

Interpretation: It should be determined for the formal charge of given following molecule or ion.

Concept Introduction:

Formal charge (FC): The charge assigned to an atom in a molecule, irrespective of relative electro negativity by thinking that electrons in all chemical bonds are shared equally among atoms.

Formal charge of an atom can be determined by the given formula.

Formalcharge(FC)=(numberofvalenceelectroninatom)[(numberofnon-bondingelectrons)+12(numberof bondingelectrons)]

Explanation

The formal charge for atom in a molecule or ion is calculated based on the Lewis structure of the molecule or ion by following the given equation below:

Formal charge calculation of molecule or ion =NVE-{LPE+12(BE)

Number of valence electron in Nitrogen atom is 5

(b)

Interpretation Introduction

Interpretation: It should be determined for the formal charge of given following molecule or ion.

Concept Introduction:

Formal charge (FC): The charge assigned to an atom in a molecule, irrespective of relative electro negativity by thinking that electrons in all chemical bonds are shared equally among atoms.

Formal charge of an atom can be determined by the given formula.

Formalcharge(FC)=(numberofvalenceelectroninatom)[(numberofnon-bondingelectrons)+12(numberof bondingelectrons)]

(c)

Interpretation Introduction

Interpretation: It should be determined for the formal charge of given following molecule or ion.

Concept Introduction:

Formal charge (FC): The charge assigned to an atom in a molecule, irrespective of relative electro negativity by thinking that electrons in all chemical bonds are shared equally among atoms.

Formal charge of an atom can be determined by the given formula.

Formalcharge(FC)=(numberofvalenceelectroninatom)[(numberofnon-bondingelectrons)+12(numberof bondingelectrons)]

(d)

Interpretation Introduction

Interpretation: It should be determined for the formal charge of given following molecule or ion.

Concept Introduction:

Formal charge (FC): The charge assigned to an atom in a molecule, irrespective of relative electro negativity by thinking that electrons in all chemical bonds are shared equally among atoms.

Formal charge of an atom can be determined by the given formula.

Formalcharge(FC)=(numberofvalenceelectroninatom)[(numberofnon-bondingelectrons)+12(numberof bondingelectrons)]

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