Question

The activity series is a description of the relative reactivity of elements. Which of the following statements is NOT true?

a) K is more reactive than Au
b) Bi is less reactive than Mg
c) Cd is less reactive than Co
d) Ba is more reactive than Mn

Answer 1

The statement that is NOT true is option c) Cd is less reactive than Co.

Step-by-step explanation:

The statement that is NOT true is option c) Cd is less reactive than Co. According to the activity series, Cd is actually more reactive than Co. The activity series is a list of elements in decreasing order of their reactivity. This means that elements higher in the series are more reactive than elements lower in the series. In this case, Cd is higher in the series than Co, indicating that Cd is more reactive than Co.