The spectrochemical series is I < Br< < Cl^- < F The complex [Ni(C1)6.]^4- is green and the complex [Ni(en)3]2^+ is violet, where en corresponds to the ethylenediamine ligand. The reason for the difference in the color of these complexes is:

a. The [Ni(Cl)6]4- absorbs green light, and the [Ni(en)3]2+ absorbs violet light.
b. The splitting of the d-orbitals is smaller in the [Ni(Cl)6]4- complex than in the [Ni(en)3]2+ complex.
c. The chloride ligand is green, and the ethylenediamine ligand is violet.
d. The splitting of the d-orbitals is larger in the [Ni(Cl)6]4- complex than in the [Ni(en)3]2+ complex.
e. Two of the above statements are correct.
f. The difference in the coordination numbers of the chloride complex and the en complex.
g. The difference in the oxidation states of the central transition metals in the [Ni(Cl)6]4- complex and the [Ni(en)3]2+ complex.

The image compares the arrangement of electrons in two different neutral atoms. a figure labeled atom q has a shaded sphere at the center of three concentric circles. the innermost circle has two black spheres. the middle circle has six black spheres. to the left of this figure is another figure labeled atom p. atom p has a shaded sphere at the center of three concentric circles. the innermost circle has two black spheres. the middle circle has seven black spheres. which of the following best explains the position of the two atoms in the periodic table? atom p has an estimated zeff of 7 and is therefore to the left of atom q, which has a zeff of 6. atom p has an estimated zeff of 7 and is therefore to the right of atom q, which has a zeff of 6. atom p has an estimated zeff of 5 and is therefore below atom q, which has a zeff of 4. atom p has an estimated zeff of 5 and is therefore above atom q, which has a zeff of 4.