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

Brief Explanations:

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.