Humboldt State University ® Department of Chemistry

Richard A. Paselk

 

General Chemistry

Spring 2015

Exercise: Hybrid Molecular Orbitals

© R. Paselk 2015
 
 

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Hybrid Molecular Orbitals

Determine the hybrid molecular orbital type, molecular shapes, bond type(s) and polarities for the covalent molecules below. You may want to make Lewis Structures first in order to determine the steric numbers for each molecule. A Periodic Table is provided with Hi (red), Lo (gray) and Intermediate (green) Electronegativities indicated to aid in predicting polarity.

Example: Formaldehyde, CH2O

Periodic Table of the Elements
   IA IIA IIIA IVA VA VIA VIIA VIIIA
   H  He
2 Li Be    B C N O F Ne
3 Na Mg IIIB IVB VB VI VIIB VIIIB IB IIB  Al Si P S Cl Ar
4 K Ca Sc  Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr
5  Rb Sr  Y Zr Nb Mo Tc Ru Rh Pd  Ag  Cd  In Sn Sb Te I  Xe
6  Cs Ba Lu  Hf Ta  W Re Os Ir  Pt Au  Hg Tl  Pb Bi Po At Rn
  1. Methane, CH4

  2. Hydrogen sulfide

  3. Carbon monoxide

  4. Ammonia, NH3

Set A - Answers 1-4

  1. Formaldehyde, CH2O

  2. Carbon dioxide, CO2

  3. Chloromethane, CH3Cl

  4. Acetic acid, CH3CO2H

  5. Ozone, O3

  6. Sulfite ion

  7. Water, H2O

  8. Carbocation, CH3+

Set B - Answers 1-8

1. Phosphorus pentachloride, PCl5.

2. Sulfur tetrafluoride, SF4.

3. Arsenic hexafluoride ion, AsF6-.

4. Iodine pentachloride, ICl5.

 

Set C - Answers 1-4


In addition to these exercises you should familiarize yourself with the text materials.


Go to Report to get credit for Module

© R A Paselk

Last modified 20 April 2015