For the given Lewis symbol of the anion, the group of the element is to be determined. Concept introduction: A Lewis dot symbol is composed of an element’s symbol surrounded by dots. In Lewis dot symbol, dots represent the valence electrons. Dots are placed above and below as well as to the left and right of symbol. Number of dots is important in Lewis dot symbol but not the order in which the dots are placed around the symbol. In writing symbol pairing is not done until absolutely necessary. For metals, the number of dots represents the number of electrons that are lost when the atom forms a cation. For second period non-metals, the number of unpaired dots is the number of bonds the atom can form. Atomic ions can also be represented by dot symbols, by simply adding (for anions) and subtracting (for cations) the appropriate number of dots from Lewis dot symbol.

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Chapter 8.1, Problem 4CP

Interpretation Introduction

Interpretation:

For the given Lewis symbol of the anion, the group of the element is to be determined.

Concept introduction:

A Lewis dot symbol is composed of an element’s symbol surrounded by dots.

In Lewis dot symbol, dots represent the valence electrons.

Dots are placed above and below as well as to the left and right of symbol.

Number of dots is important in Lewis dot symbol but not the order in which the dots are placed around the symbol.

In writing symbol pairing is not done until absolutely necessary.

For metals, the number of dots represents the number of electrons that are lost when the atom forms a cation.

For second period non-metals, the number of unpaired dots is the number of bonds the atom can form.

Atomic ions can also be represented by dot symbols, by simply adding (for anions) and subtracting (for cations) the appropriate number of dots from Lewis dot symbol.

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