Respuesta :
A chemical symbol uses two or one letter to depict the elemental atom in a periodic table or the reaction. The symbols Na (sodium) and F (fluorine) represent the atom. Thus, option A is correct.
What is an atom?
An atom is said to be the fundamental unit of the element that makes the molecule or the compound through chemical and intermolecular bonding. It is a matter that defines the specific element.
The atoms of the different elements are expressed by the chemical symbols, atomic numbers, and atomic masses. The symbol contains one or two letters of the alphabet that mostly resembles the name of the element. Na is a chemical symbol that resembles the atom of the sodium element, whereas F represents the atom of the fluorine element.
Therefore, in option A. the chemical symbols like Na and F represent an atom.
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