CHE 102 Lecture 18: Writing into Silence_ Junot Diaz Human Rights and the Imperial (1)

1.Determine the number of vibrational modes of NH3 and how many of those vibrational modes will be IR active.

2.The 56FeH diatomic molecule absorbs infrared light at a 1661 cm-1. Where does the 54FeH diatomic molecule absorb light? Assume that the bond strengths are the same and use the harmonic oscillator model to answer this question.

Inorganic Chemistry/Molecular Theory

a) Fully explain what a centrosymmetric molecule is and why it follows the rule of mutual exclusion.

b) In complete sentences explain why (in regards to a Walsh Diagram) as bonding decreases, energy increases.