Name the following compounds and specify which ones are best...

Name the following compounds and specify which ones are best described as ionic: (a) $\mathrm{OF}_{2} ;$ (b) $\mathrm{XeF}_{2}$
(c) $\operatorname{CuSO}_{3} ;$ (d) $\left(\mathrm{NH}_{4}\right)_{2} \mathrm{HPO}_{4}$

Key Concepts

Inorganic Nomenclature

Inorganic nomenclature involves the systematic rules used to name chemical compounds, including both ionic and molecular substances. This framework allows chemists to deduce chemical formulas and structures from names and vice versa by applying principles such as oxidation states, ligand naming, and the use of prefixes and suffixes appropriate to the type of compound.

Ionic Bonding Characteristics

Ionic bonding occurs when electrons are transferred from one atom to another, resulting in the formation of oppositely charged ions that are held together by electrostatic forces. This typically happens between metals and non-metals or between complex polyatomic ions and cations, leading to compounds that often have high melting points, are brittle, and conduct electricity when in molten state or in solution.

Covalent Bonding and Molecular Compounds

Covalent bonding is characterized by the sharing of electron pairs between atoms, which generally occurs between non-metal atoms. Molecular or covalent compounds formed by such bonding typically have lower melting and boiling points compared to ionic compounds and do not conduct electricity in their pure state. Understanding the difference in bonding helps in predicting the physical and chemical properties of compounds.

Electronegativity and Bond Character Determination

Electronegativity, the tendency of an atom to attract electrons in a bond, plays a key role in determining whether a bond will be ionic or covalent. A large difference in electronegativity between two atoms generally leads to ionic bonding, while a smaller difference favors covalent bonding. This concept is fundamental in assessing the type of chemical bond and understanding the behavior of various compounds.

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