For which of the following compounds is the term formula mass better suited than the term molecular mass?
i.F₂
ii.CaO
iii.NH₃
iv.NaOH
v.CH₃OH

Question

For which of the following compounds is the term formula mass better suited than the term molecular mass? i.F₂ ii.CaO iii.NH₃ iv.NaOH v.CH₃OH

Quizplus · Accepted Answer

The term "molecular mass" is used for compounds that contain covalent bonds, where atoms share electrons in a molecule. Compounds ii (CaO) and iv (NaOH) are ionic, where atoms transfer electrons to form ions that are held together by electrostatic forces. Therefore, for these compounds, the term "formula mass" is more appropriate.

For Which of the Following Compounds Is the Term Formula