Chap 7 Chem
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| What shape is l=0, or the s Orbital? | Spherical.
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| What shape is l=1, or p orbital? Possible ml? | Two-lobed.
ml = −1, 0, +1
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| l= 2 or d orbital, what shape are they? | Mainly four-lobed. One is two-lobed with a toroid
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| Energy can only be released or absorbed in ______________. In other words, energy is ____________. | Small discrete packages. Energy is quantized.
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| Why is the quantum mechanical model of the atom important for understanding chemistry? | The quantum mechanical model of the atom explains how electrons exist in atoms and how those electrons determine the chemical physical properties of elements. So it provides the basis for understanding chemical bonding.
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| What is light? | Light is electromagnetic radiation. It is a type of energy present in oscillating electrons and magnetic fields. Electromagnetic radiation is composed of oscillating, mutually perpendicular electric and magnietic fields propagating through space as wave
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| How fast does light travel in a vacuum? | 3.00 x 10^8 m/s in a vacuum.
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| Define wavelength. Define amplitude. | Wavelength of a wave is the distance in space between adjacent crests or troughs. Amplitude of a wave is the vertical height of a crest or the depth of a trough.
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| Define frequency of electromagnetic radiation. | Frequency of a wave is defined as the number of cycles (or wave crests) that pass through a stationary point in a given period of time.
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| What determines the color of light? Describe the difference between red light and blue light? | Frequency is inveserly proportional to wavelength. A wave with a short wavelength has a high requency and a wave with a long wavelengh has a low frequency. Red light has a wave length of 750 nm, while blue has wavelength of 450 nm.
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| A wave with a _______ wavelength has a high frequency. A wave with a __________ wavelength has a low frequency. | short, long
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| List the following electromagnetic radiation in order of increasing frequency: visible light, microwaves, x-rays | Microwaves < visible light < x-rays
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