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5.2 How are wavelength and frequency of light related?
Elctromagnetic radiation, including light consist of energy particles that move as waves of energy. The wavelength is the distance from one wave peak to the next wave peak. Frequency is the number of waves that pass a certain point in one second. All electromagnetic radiation travels at the speed of light which is equal to the product of wavelength and frequency. (wavelength x frequency= speed of light).
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5.9 Which type of electromagnetic radiation, ultraviolet light, microwaves, or x-rays, have the longest wavelengths?
Microwaves have a longer wavelength than ultraviolet light or x-rays.
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5.11 Place the follwing types of electromagnetic energy in order of increasing wavelengths: The blue color in a rainbow, x-rays, microwaves from an oven, infared radiation from a heat lamp.
From shortest to longest wavelength: X-rays, blue light, infared, microwaves.
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5.14 How can we explain the distinct lines that appear in an atomic spectrum?
Only certain wavelengths of light are produced when an element is heated, which gives each element a unique atomic spectrum.
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5.16 Electrons drop to lower energy levels when they _______(absorb/emit) a photon.
emit
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5.20 Identify the type of photon in each pair with the greater energy.
a. orange light or violet light
b. infared light or ultraviolet light
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5.27 Indicate the maximum number of electrons in the following:
a. 2p orbital
b. 3p sublevel
c. energy level n=4
d. 5d sublevel
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5.30 What's the difference between an orbital diagram and electron configuration?
An orbital diagram has all the the boxes drawn for each energy block with the arrows indicating electron spin and number of electrons in each orbital while an electron configuration is simply text describing the number of electrons (EX: 1s12s22p6...)
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5.33 Write the complete electron configuration for the following:
a. nitrogen
b. sodium
c. bromine
d. nickel
- a. N= 1s22s22p6
- b. Na= 1s22s22p63s1
- c. Br= 1s22s22p63s23p64s23d104p5
- d. Ni= 1s22s22p63s23p64s23d8
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5.37 What is the symbol for the element with the following electron configurations:
a. 1s22s1
b. 1s22s22p63s23p4
c. [Ne]3s23p2
d. [He]2s22p5
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What is the periodic trend for atomic radius?
Atomic Radius increases moving across the groups from right to left and down the periods.
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List in order elctromagnetic energy from longest wavelength to shortest wavelength.
How to remember: Ricky Martin Is Very Uber Xtra Gay. This stands for
- Radio waves
- Microwaves
- Infared
- Visible light
- Ultraviolet
- X-rays
- Gamma Rays
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