The primary ions that contribute to the salinity of ocean waters are

Name: The primary ions that contribute to the salinity of ocean waters are
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Sodium and chloride ions are the primary contributors to the salinity of ocean water, making up about 85% of dissolved ions in seawater. Calcium and chloride do contribute to salinity as well, but at much lower concentrations. Carbonate and sodium also contribute, but to a lesser extent than sodium and chloride.

The Primary Ions That Contribute to the Salinity of Ocean