SCIENCE
EARTH SCIENCE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The two most abundant elements in the sea water are sodium and.
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Oxygen
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Sulphur
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Chlorine
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Carbon dioxide
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Explanation:
Detailed explanation-1: -The most abundant dissolved ions in seawater are sodium, chloride, magnesium, sulfate and calcium. Its osmolarity is about 1000 mOsm/l.
Detailed explanation-2: -In seawater, oxygen and hydrogen are abundant as they make up the water molecule. Sodium and chlorine make up sodium chloride, a common salt. The source of many of the dissolved substances in the ocean is the Earth’s crust.
Detailed explanation-3: -Chlorine, present as chloride ion, is the most abundant ion and makes up about 55 per cent by weight of the dissolved material.
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