Chapter 21, Problem 79RQ

Interpretation Introduction

Interpretation:

The complex that absorbs the light of the shorter wavelength among each pair of the given complexes is to be determined and the reason is to be justified.

Concept Information:

Crystal field theory actually decsribes the bonding of complex ions.

Ligands are the molecules or ions that are bonded with a coordinate covalent bond to a metal ion.

Crystal field splitting or $\Delta$ is the energy difference between the two sets of $d$ orbitals, that is, between the higher energy levels of $d_{x^2-y^2}$ and $d_{z^2}$ orbitals and the lower energy levels of $d_{xy}$, $d_{xz}$, and $d_{yz}$ orbitals in an octahedral complex.

The energy carried by the single photon is called photon energy. The amount of energy is directly proptional to the photon’r electromagnetic frequency and inversely propotional to the wavelength. The equation of photon energy is:

$\text{E = hv or hc/λ}$.