Lewis Structures - I Lewis Structures of Covalent Molecules...

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I. Lewis Structures of Covalent Molecules a. A covalent bond is a shared pair of electrons i. Hydrogen ii. Fluorine iii. Hydrogen fluoride iv. Chlorite ion – see worksheet b. Counting valence electrons i. See class notes – Lewis Structure c. Multiple Bonds i. Double bond 1. Two pairs of electrons shared between 2 atoms a. Ex. – oxygen ii. Resonance structure iii. Triple bond 1. Three pairs of electrons shared between two atoms a. Ex. – nitrogen II. Light (Electromagnetic Radiation) a. Behaves something like a wave b. Wavelength ( λ ) i.
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Unformatted text preview: i. The distance between successive peaks on a wave ii. See notes – Lewis Structure (Wavelength) c. Frequency ( ν ) i. The number of waves passing a fixed point in one second ii. Hertz 1. Unit used to measure frequency 2. 1 cycle/sec (1/sec or sec-1 ) iii. High frequency 1. High energy 2. Short wavelength iv. Low frequency 1. Low energy 2. Long wavelength d. The speed of light i. C = λν ii. C = 3.00 x 10 8 m/s iii. See notes – Lewis Structure (Speed of Light)...
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