The smallest unit of an ionic bond is referred to as a formula unit, which represents the ratio of ions in the compound. An atom, while essential to the structure of matter, does not convey the ionic bonding itself. For instance, in NaCl, the formula unit is composed of sodium and chloride ions. ;
The smallest unit of an ionic bond is referred to as a formula unit, which represents the ratio of ions in an ionic compound. In sodium chloride (NaCl), the formula unit consists of one sodium ion and one chloride ion. Therefore, the answer is B. a formula unit .
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