Chapter 5, Problem 68QRT

(a)

Interpretation Introduction

Interpretation:

A Lewis dot symbol for strontium atom and its position in periodic tablehas to be given.

Concept Introduction:

Lewis dot symbol:

• In Lewis dot symbol an element symbol is surrounded by a number of dots equal to the number of valence electrons. 
• Symbol of the element indicates the atomic nucleus together with core electrons. 
• The dots are placed to the right of the symbol, to the left, above and below. 
• Dots are added one at a time until all valence electrons are represented. 
• If there are more than four valence electrons, dots are paired with existing ones.

(b)

Interpretation Introduction

Interpretation:

A Lewis dot symbol for bromine atom and its position in periodic table has to be given.

Concept Introduction:

Refer to part (a)

(c)

Interpretation Introduction

Interpretation:

A Lewis dot symbol for gallium atom and its position in periodic table has to be given.

Concept Introduction:

Refer to part (a)

(d)

Interpretation Introduction

Interpretation:

A Lewis dot symbol for antimony atom and its position in periodic table has to be given.

Concept Introduction:

Refer to part (a)