Considering the strength of the ligand, the highest excitation energy will be observed in:
Stronger ligand → higher splitting energy.
[Co(Hâ‚‚O)₆]³âº
[Co(NH₃)₆]³âº
[Co(CN)₆]³â»
[CoCl₆]³â»
CN⻠is a strong field ligand → large splitting → high excitation energy.

Study the diagram above and answer the following questions:
(a) How many alleles are involved in blood grouping?
(b) A person having 'AB' blood group has both dominant alleles. What is this inheritance type called?
(c) A man with 'A' blood group marries a woman with 'B' blood group. Can they have a child with 'O' blood group? Explain with the help of a cross.