The formulas for the ionic compounds formed between the pair of given elements are to be written. Concept Introduction: An ionic compound consists of ions that have electrostatic interaction between them which is termed as ionic bonding. The element symbols and subscripts in an ionic compound are represented by a chemical formula. While writing the chemical formula for an ionic compound, the symbol of the metal is written first, which is followed by the symbol of the non-metal. Formal charge equation can be given as: Formal charge = number of valence electrons − 1 / 2 number of shared electrons − number of unshared electrons or F = Z − ( 1 / 2 ) S − U where F is the formal charge, Z is the group number of the element, S equals the number of shared electrons, and U is the number of unshared electrons. The arithmetic sum of all the formal charges in a molecule or ion will equal the overall charge on the molecule or ion.

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Chapter 2, Problem 92RQ

Interpretation Introduction

Interpretation:

The formulas for the ionic compounds formed between the pair of given elements are to be written.

Concept Introduction:

An ionic compound consists of ions that have electrostatic interaction between them which is termed as ionic bonding.

The element symbols and subscripts in an ionic compound are represented by a chemical formula.

While writing the chemical formula for an ionic compound, the symbol of the metal is written first, which is followed by the symbol of the non-metal.

Formal charge equation can be given as:

Formal charge = number of valence electrons −1/2 number of shared electrons − number of unshared electrons or

F = Z − (1/2)S − U

where F is the formal charge, Z is the group number of the element, S equals the number of shared electrons, and U is the number of unshared electrons.

The arithmetic sum of all the formal charges in a molecule or ion will equal the overall charge on the molecule or ion.

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