<h2>Answer : Names.</h2>
Explanation : 1A, 3B and 7A are the examples of group Names on the periodic table.
The names of the groups are given in the form of numbers and alphabets. Which represents the vertical columns of the elements present in the modern periodic table.
Each group represents a somewhat similar chemical property for the elements present in it.
Active transport requires energy and passive does not use energy.
Explanation:
Boiling-point elevation describes the phenomenon that the boiling point of a liquid (a solvent) will be higher when another compound is added, meaning that a solution has a higher boiling point than a pure solvent. This happens whenever a non-volatile solute, such as a salt, is added to a pure solvent, such as water.
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The answer is in the photo
-Pure magnesium is commonly made by separating it from seawater. This process is known as electrolysis. The liquid magnesium formed is cooled into convenient blocks of metal known as ingots. The chlorine gas is recycled to form hydrochloric acid for the production of more magnesium chloride.