Rank the following compounds in order of increasing wavelength of ultraviolet light absorbed. A B

2. Electrons in which orbital in that ion are responsible for the paramagnetic response? -Sodium Chloride -Magnesium Chloride aluminum Chloride Iron (III) Chloride Cobalt (II) chloride Copper(II) oxide

Can IR spectroscopy be used for quantitative analysis? >No, because IR spectroscopy only records vibrational frequency of bonds. >No, because IR spectroscopy only identifies the types of covalent bonds. >Yes, because the transmittance of the analyte is proportional to concentration. >Yes, because the absorbance of the analyte is proportional to concentration.

Rank the following in increasing order of nonmetallic character by numbering them in order from 1 through 6, with 1 being the least nonmetallic and 6 being the most nonmetallic. Se Cr K Br Са As

Chapter 18 Worksheet 18-1 Properties of Light 1. The stretching frequency of a carbonyl (C=0) bond in a typical ketone is 5.15 x 1013 Hz. The vibrational energy of the molecule increases when light of this frequency is absorbed.   a) What is the wavelength of this light in nanometers? b) What is the wavelength of this light in micrometers? c) Express the frequency of this light in wavenumbers. d) What is the energy (in joules) of a single photon of light at this frequency? e) What is the energy (in kilojoules) of one mole of photons at this frequency? f) Into what region of the electromagnetic spectrum does this radiation fall?

Rank the following dienes in order of increasing stability (least to most). OI

is the following Diamagnetic or paramagnetic: H3BO3 C2H5OH (l)

An unknown has the formula CeH12O. The IR spectrum of this substance has a strong vibration near 1700 cm-1. Which structure below is consistent with these data? OH II A) I B)II II IV C) II OH D) IV

H b. H₂O (xs) H₂SO4

The structure of 1,2-propadiene (allene) is shown to the right. (a) Predict all approximate bond angles in this molecule. (b) State the orbital hybridization of each carbon. (c) Explain the three-dimensional geometry of allene in terms of the orbitals used.