Question

which of the following abbreviations is not an electrolyte?
a k+
b hco3-
c na+
d ns

Explanation:

Electrolytes are substances that dissociate into ions in solution. \(K^{+}\) (potassium ion), \(HCO_{3}^{-}\) (bicarbonate ion), and \(Na^{+}\) (sodium ion) are all ions and thus electrolytes. NS stands for normal saline, which is a solution (\(0.9\%\) \(NaCl\) solution). It is not an ion but a solution containing \(Na^{+}\) and \(Cl^{-}\) ions. However, the abbreviation NS itself is not an electrolyte (the ions within it are).

Answer:

D. NS