Multiple choice

Which of the following pair of ions have different colours in aqueous solution?

  1. Cr3+ and Mn3+

  2. V4+ and Cu2+

  3. Fe2+ and Ni2+

  4. Co2+ and Mn2+

  5. Fe3+ and Mn3+

Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

Fe3+(aq): Yellow Mn3+(aq): Violet