Question

sep construct an explanation why is a crystal of strontium chloride (srcl₂) described as an extended structure?

Explanation:

Strontium chloride (\(SrCl_2\)) is an ionic compound. In its crystal, \(Sr^{2 +}\) and \(Cl^-\) ions are held together by strong ionic bonds. These ions are arranged in a repeating three - dimensional pattern. There are no discrete \(SrCl_2\) molecules. Instead, the entire crystal is one continuous network of ions. The ratio of \(Sr^{2+}\) to \(Cl^-\) ions is \(1:2\) throughout the crystal, and this repeating pattern extends in all directions, which is why it is called an extended structure.

Answer:

A crystal of \(SrCl_2\) is an extended structure because it consists of \(Sr^{2+}\) and \(Cl^-\) ions arranged in a repeating three - dimensional pattern (due to ionic bonding) with no discrete molecules, and the \(1:2\) ratio of \(Sr^{2+}\) to \(Cl^-\) is maintained throughout the continuous network of ions in all directions.