The Lewis structures of SeF 4 and SeF 6 are to be represented, Also, whether the molecules obey the octet rule or not is to be stated. Concept introduction: The Lewis structure is a representation of bonding and nonbonding electron pairs present in the outermost shells of the atoms present in a molecule. The number of bonds formed by an atom in the molecule is determined by the valence electrons pairs. 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. An atom becomes unreactive after its octet of eight electrons gets completely filled.

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Chapter 8, Problem 74QP

Interpretation Introduction

Interpretation:

The Lewis structures of SeF4 and SeF6 are to be represented, Also, whether the molecules obey the octet rule or not is to be stated.

Concept introduction:

The Lewis structure is a representation of bonding and nonbonding electron pairs present in the outermost shells of the atoms present in a molecule.

The number of bonds formed by an atom in the molecule is determined by the valence electrons pairs.

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.

An atom becomes unreactive after its octet of eight electrons gets completely filled.

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