Examlex
Which of the following statements is correct?
Sodium
A chemical element with the symbol Na and atomic number 11, a highly reactive metal.
Sodium
Sodium is a chemical element with the symbol Na and atomic number 11, known for its essential role in human physiology and its presence in salt.
President
The elected head of a republican state or a person holding a position of leadership in certain organizations.
Economy
A system of production, distribution, and consumption of goods and services within a particular geographical region.
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