47 - The pycnometric density of sodium chloride

Disclaimer: This website is NOT associated with CBSE, for official website of CBSE visit - www.cbse.gov.in

The pycnometric density of sodium chloride crystal is 2.165 × 103 kg m-3 while its X-ray density is 2.178 × 103 kg m-3 . The fraction of unoccupied sites in sodium chloride crystal is?