Which of the following complex ions is expected to absorb visible light?

Which of the following complexions is expected to absorb visible light ? (Al. No. Zn=30, SC=21, Ti= 22, Cr= 24)

Which ofthe following complexions is expected to absorb visible light?

Which of the following complex ion is not expected to absorb visible light?

Which of the following complex ion is not expected to absorb visible light ?

Which of the following complex ion is not expected to absorb visible light?

Which of the following complex ion is not expected to absob visible light ?