do they have any color?
The colour is often different to the colour of an aqueous solution containing the constituent ions, or the hydrated form of the same compound.
Ionic compound
The colour of an ionic compound is often different to the colour of an aqueous solution containing the constituent ions, or the hydrated form of the same compound.
describe in general terms the structure of ionic solids such as nacl Ionic compound is a chemical compound composed of ions held together by electrostatic forces termed ionic bonding. The compound is neutral overall, but consists of positively charged ions called cations and negatively charged ions called anions. can you mention a few examples for such compounds? hese can be simple ions such as the sodium (Na) and chloride (Cl) in sodium chloride, or polyatomic species such as the ammonium () and carbonate () ions in ammonium carbonate
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Ionic compound [SEP] Colour
The colour of an ionic compound is often different to the colour of an aqueous solution containing the constituent ions, or the hydrated form of the same compound. The anions in compounds with bonds with the most ionic character tend to be colourless (with an absorption band in the ultraviolet part of the spectrum). In compounds with less ionic character, their colour deepens through yellow, orange, red and black (as the absorption band shifts to longer wavelengths into the visible spectrum). The absorption band of simple cations shift toward shorter wavelength when they are involved in more covalent interactions. This occurs during hydration of metal ions, so colourless anhydrous ionic compounds with an anion absorbing in the infrared can become colourful in solution.