Answer:
C
Step-by-step explanation:
A displacement reaction occurs when a more reactive element replaces a less reactive element in a compound.
The general reaction can be represented as:
A + BC → AC + B
Therefore, the reactant that is more reactive than the element in the compound will undergo a displacement reaction.Out of the given options, the reactant that will not undergo a displacement reaction is C. Fluorine + sodium chloride. This is because fluorine is the most electronegative element and it cannot be displaced by any other element. In other words, fluorine is the most reactive element and there is no other element that is more reactive than it. Therefore, the reaction between fluorine and sodium chloride will not undergo a displacement reaction.
Option A, Magnesium + sodium fluoride, will undergo a displacement reaction because magnesium is more reactive than sodium, and can displace sodium from sodium fluoride.
Option B, Chlorine + sodium chloride, will undergo a displacement reaction because chlorine is more reactive than sodium, and can displace sodium from sodium chloride.
Option D, Zinc + copper (ll) chloride, will undergo a displacement reaction because zinc is more reactive than copper, and can displace copper from copper (ll) chloride.
Thus, the correct answer is C. Fluorine + sodium chloride.