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Introductory Chemistry: A Foundati...

9th Edition
Steven S. Zumdahl + 1 other
ISBN: 9781337399425

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BuyFindarrow_forward

Introductory Chemistry: A Foundati...

9th Edition
Steven S. Zumdahl + 1 other
ISBN: 9781337399425
Textbook Problem
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Give the total number of valence electrons in each of the following molecules.

msp;  a .  B 2 O 3   c .  C 2 H 6 O b .  CO 2     d .  NO 2

Interpretation Introduction

(a)

Interpretation:

The number of valence electrons of the given compound is to be stated.

Concept Introduction:

The distribution of the electrons that exists in the atomic orbital of an atom is collectively known as electron configuration. The description of every electron that is moving freely in an orbital is given by the electron configuration of that atom.

The electrons that are present in the outermost shell of an atom are known as valence electrons. The outermost shell of an atom is known as valence shell. The valence electrons are more loosely held than the electrons which are closer to the nucleus. The formula for the calculation of number of valence electrons in a molecule is:

Totalvalenceelectrons=nValenceelectronsinAtom1+nValenceelectronsinAtom2+.......+nValenceelectronsinAtomm

Where,

  • n is the number of atoms.
Explanation

Total valence electrons in B2O3 is calculated as shown below.

Totalvalenceelectrons=nValenceelectronsinB+nValenceelectronsinO

Where,

  • n is the number of atoms.

Substitute the values of n, valence electrons of B and O in the above expression

Interpretation Introduction

(b)

Interpretation:

The number of valence electrons of the given compound is to be stated.

Concept Introduction:

The distribution of the electrons that exists in the atomic orbital of an atom is collectively known as electron configuration. The description of every electron that is moving freely in an orbital is given by the electron configuration of that atom.

The electrons that are present in the outermost shell of an atom are known as valence electrons. The outermost shell of an atom is known as valence shell. The valence electrons are more loosely held than the electrons which are closer to the nucleus. The formula for the calculation of number of valence electrons in a molecule is:

Totalvalenceelectrons=nValenceelectronsinAtom1+nValenceelectronsinAtom2+.......+nValenceelectronsinAtomm

Where,

  • n is the number of atoms.
Interpretation Introduction

(c)

Interpretation:

The number of valence electrons of the given compound is to be stated.

Concept Introduction:

The distribution of the electrons that exists in the atomic orbital of an atom is collectively known as electron configuration. The description of every electron that is moving freely in an orbital is given by the electron configuration of that atom.

The electrons that are present in the outermost shell of an atom are known as valence electrons. The outermost shell of an atom is known as valence shell. The valence electrons are more loosely held than the electrons which are closer to the nucleus. The formula for the calculation of number of valence electrons in a molecule is:

Totalvalenceelectrons=nValenceelectronsinAtom1+nValenceelectronsinAtom2+.......+nValenceelectronsinAtomm

Where,

  • n is the number of atoms.
Interpretation Introduction

(d)

Interpretation:

The number of valence electrons of the given compound is to be stated.

Concept Introduction:

The distribution of the electrons that exists in the atomic orbital of an atom is collectively known as electron configuration. The description of every electron that is moving freely in an orbital is given by the electron configuration of that atom.

The electrons that are present in the outermost shell of an atom are known as valence electrons. The outermost shell of an atom is known as valence shell. The valence electrons are more loosely held than the electrons which are closer to the nucleus. The formula for the calculation of number of valence electrons in a molecule is:

Totalvalenceelectrons=nValenceelectronsinAtom1+nValenceelectronsinAtom2+.......+nValenceelectronsinAtomm

Where,

  • n is the number of atoms.

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