Question

Describe the extraction of magnesium and bromine from the sea water.

Answer 1

Hint: Magnesium is a chemical element having the symbol as $Mg$ and an atomic number of $12$. It is shiny grey solid which bears a close physical resemblance to the other five elements in the second column of the periodic table. Bromine is chemical element with the symbol $Br$ and an atomic number $35$, it is fluming red liquid at room temperature

Complete answer:
The extraction of magnesium from the sea water:
One of the most commonly used techniques involves the heating where it is the heating of magnesium chloride salt at $900^\circ C$ and then performing a chemical reaction called electrolysis to extract the magnesium metal from the molten salt. As magnesium being the costly element it is found ways to extract from, mainly the most important extraction is from sea water.
The extraction of bromine from the sea water:
One method currently used to extract bromine from sea water, is the air blowing method, which is first blown then neutralized, and then distilled. This kind of extraction is suitable for low-energy bromine containing brines. Another method is to extract bromine by the steam distillation which is directly oxidised by chlorine gas.
Usually minerals have been extracted from sea water from remote times, the classic examples being sodium chloride, the common table salt. Today, the four most concentration metal ions in seawater are commercially recovered.

Note:this is pretty much the information about the extraction of magnesium and bromine from sea water. Here we have to note the important points and the methods of extraction. We have to know the concepts well, so that it gets easier in answering the questions more quickly. This is a direct question from the chemistry textbook.