Question

part 1 of 2
a dropper bottle labeled as solution 2 contains a pale green liquid. based on the color of liquid, identify the cation present in the solution. select the single best answer.
○ iron(iii) ion
○ nickel(ii) ion
○ cobalt(ii) ion
○ copper(ii) ion

Explanation:

Aqueous solutions of transition metal cations have characteristic colors: iron(III) forms yellow/brown solutions, nickel(II) forms green solutions, cobalt(II) forms pink/red solutions, and copper(II) forms blue solutions. The given solution is pale green, which matches the color of a nickel(II) ion solution.

Answer:

○ nickel(II) ion