Question

Metal extracted from sea water is:
A.Be
B.Mg
C.Ba
D.Ca

Answer 1

Water contains the salts of Ca and Mg. The water occurs the bicarbonate salts, Chloride salts and sulphate of Mg and Ca. But sea water has a large amount of $MgC{l_2}$ , so the extracted Mg from sea water rapidly.

Complete step by step answer:
Sea water is salty in nature. Sea water contains a large amount of chloride. In the report of the US, $63\%$ of Mg extracted from sea water. It brines means the process of requiring the passing of molten salt.
If the metal is extracted from the sea water, high temperature is required to melt salt.
We take only Cubic kilometers of sea water and we get a million tons of magnesium compound. The metal is extracted by the process of electrolysis.
When metal extract from sea water is known as Dow seawater process.
The sea water contains a large amount of chloride of Mg.

Hence, the correct option is (B).

Additional information:
Sea water contains 47 minerals and metals. It contains Na, Mg, Ca, K, Br, and inorganic carbon in different amounts. There are extraction techniques to extract elements from Sea water. The Ions are concentrated and extracted from seawater by evaporation. Sea water contains salt which refers to a large amount of NaCl. At the high temperature the metal extracts from the sea water.

Note:
The extraction method of metal from the sea water. The US report in 2015 states that extraction of Mg from sea water is in large amounts by electrolysis.