Exam 4: The Modern Model of the Atom

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Match the scientist with his contribution from the list below.
Max Planck
Suggested the existence of a tiny, massive nucleus
Erwin Schrodinger
Proposed the quantized energy of electrons
Ernest Rutherford
First described the quantum theory of energy
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Max Planck
Suggested the existence of a tiny, massive nucleus
Erwin Schrodinger
Proposed the quantized energy of electrons
Ernest Rutherford
First described the quantum theory of energy
Niels Bohr
Is the father of quantum physics
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Classify each of the following as ground state, excited state, or impossible electronic configurations.
Excited State
Ground State
Impossible state
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Excited State
Ground State
Impossible state
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Predict the formula of the compound produced in a reaction between lithium (Li)and phosphorus (P).

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The wavelengths in infrared radiation are larger than those of the ultraviolet region.

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Modern atomic theory places electrons into complex mathematical probability functions called "orbitals."

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Modern scientists accept the notion that electrons are found in circular orbits around a central, positively charged nucleus.

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What is the wavelength (in meters)of radio waves that have a frequency of 89.9 MHz? (wavelength × frequency = speed of light; speed of light = 3 × 108 meters/sec.)

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The p-block represents a region on the periodic table which is 6 elements in width.

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In a single atom, what is the maximum number of electrons that can have quantum number n=4?

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Calculate the energy in joules of microwave radiation of wavelength 12.7 centimeters. (E = hν, h = 6.63 × 10-34 J sec; speed of light = wavelength × ν, speed of light = 3 × 108 meters/sec.)

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Blue visible light is of lower energy than red visible light.

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What is the main difference between "classical physics" and "quantum physics"?

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The relative ratio of atoms in the binary compound AlxOy is ________.

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How many electrons can be "stored" in a completely filled p-block of elements?

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Blue visible light is of a higher frequency than red visible light.

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The n = 5 principal energy level can hold a maximum of 25 electrons.

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The frequency of infrared radiation that has a wavelength of 1.5 × 103 nm is 2.0 × 107 sec-1 (given: speed of light = 3.0 × 108 m/sec).

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Microwave is radiation of a lower energy than that of visible light.

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The number of electrons in the valence shell of an atom is equal to the group number for the representative elements.

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The speed of light is about 186,000 miles per minute.

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