Answer
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Work Step by Step
a. dihydrogen oxide - Acceptable and commonly used name for water. This name follows systematic IUPAC-style nomenclature: two hydrogen atoms and one oxygen atom.
b. hydroxide hydride - Not an acceptable name for water. Hydroxide refers to OH⁻, and hydride refers to H⁻, not H₂O. Water is not formed by combining these ions directly.
c. hydrogen hydroxide - An acceptable name for water. Hydrogen hydroxide would imply H(OH), which is not a stable compound. This name is sometimes used to emphasize water's acidic and basic properties (H⁺ and OH⁻), especially in theoretical or educational contexts, but it is not common.
d. oxygen dihydride - An acceptable name for water. This name reverses the order but still correctly reflects the molecular formula: one oxygen and two hydrogens.
