Sequence of the percentage of salinity in oceanic water in descending order are as follows
1
Sodium chloride, magnesium chloride, magnesium sulphate, calcium sulphate
2
Magnesium sulphate, magnesium chloride, calcium sulphate, sodium chloride
3
Magnesium chloride, sodium chloride, magnesium sulphate, calcium sulphate
4
Sodium chloride, magnesium sulphate, magnesium chloride, calcium sulphate