Chapter 5, Problem 5.46P

(a)

Interpretation Introduction

Interpretation:

Number of valence electrons present in $\text{He}$ has to be given and also the Lewis dot formula has to be drawn.

Concept Introduction:

In the electronic configuration of an atom or ion, the total number of electrons that is present in the outermost shell is known as valence electrons.

Lewis dot formula uses the valence electrons only.  The valence electrons are represented as dots around the symbol of the element.  Each dot represent one electron.

(b)

Interpretation Introduction

Interpretation:

Number of valence electrons present in ${\text{N}}^{3-}$ has to be given and also the Lewis dot formula has to be drawn.

Concept Introduction:

Refer part (a).

(c)

Interpretation Introduction

Interpretation:

Number of valence electrons present in $\text{F}$ has to be given and also the Lewis dot formula has to be drawn.

Concept Introduction:

Refer part (a).

(c)

Interpretation Introduction

Interpretation:

Number of valence electrons present in $\text{Na}$ has to be given and also the Lewis dot formula has to be drawn.

Concept Introduction:

Refer part (a).

(e)

Interpretation Introduction

Interpretation:

Number of valence electrons present in ${\text{K}}^{+}$ has to be given and also the Lewis dot formula has to be drawn.

Concept Introduction:

Refer part (a).