Which of the following properties is not characteristic of electrovalent compounds?

Assessment: WAEC SSCE - Chemistry - 1991 (Objective) Subject: Chemistry

Question 1 Report

Which of the following properties is not characteristic of electrovalent compounds?
Answer Details
The property that is not characteristic of electrovalent compounds is "high vapour pressures". Electrovalent compounds, also known as ionic compounds, have high melting and boiling points due to the strong electrostatic forces of attraction between oppositely charged ions in the crystal lattice. They also tend to form crystalline solids and are typically soluble in polar solvents. In addition, electrovalent compounds can conduct electricity in aqueous solution because the ions are free to move and carry an electric charge. However, they do not have high vapour pressures because they are held together by strong ionic bonds and are not easily vaporized.
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