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Chem Chapter 7 Quiz Exercise 40 Problems By Topic Electromagnetic

CHEM CHAPTER 7 QUIZ

Exercise 7.40: Problems by Topic – Electromagnetic Radiation
Part A
List the following types of electromagnetic radiation in order of increasing frequency.
ANSWER:
radio waves, microwaves, visible light, gamma rays

radio waves, visible light, microwaves, gamma rays

visible light, radio waves, microwaves, gamma rays

visible light, radio waves, gamma rays, microwaves

Correct
Part B
List the following types of electromagnetic radiation in order of decreasing energy per photon.
ANSWER:
microwaves, visible light, gamma rays, radio waves

microwaves, gamma rays, visible light, radio waves

gamma rays, visible light, microwaves, radio waves

gamma rays, microwaves, visible light, radio waves

Correct
Exercise 7.56: Problems by Topic – Orbitals and Quantum Numbers
Part A
Which electron is, on average, further from the nucleus: an electron in a 3p orbital or an electron in a 4p orbital?
ANSWER:
3p

4p

Correct
Exercise 7.59: Problems by Topic – Orbitals and Quantum Numbers
Part A
Which set of quantum numbers cannot occur together to specify an orbital?
ANSWER:
n=2,l=0,ml=0

n=3,l=3,ml=2

n=4,l=2,ml=0

n=3,l=1,ml=?1

Correct
Exercise 7.60: Problems by Topic – Orbitals and Quantum Numbers
Part A
Which of the following combinations of n and l represent real orbitals and which are impossible?
Drag the appropriate items to their respective bins.
ANSWER:
Exercise 7.64: Problems by Topic – Atomic Spectroscopy
Determine whether each of the following transitions in the hydrogen atom corresponds to absorption or emission of energy.
Part A
n=3?n=1
ANSWER:
absorption of energy

emission of energy

Correct
Part B
n=2?n=4
ANSWER:
absorption of energy

emission of energy

Correct
Part C
n=4?n=3
ANSWER:
absorption of energy

emission of energy

Correct
Exercise 7.79: Cumulative Problems
Suppose that in an alternate universe, the possible values of l were the integer values from 0 to n (instead of 0 to n?1). Assuming no other differences from this universe, how many orbitals would exist in each of the following levels?
Part A
n = 1
ANSWER:
Part B
n = 2
ANSWER:
Part C
n = 4
ANSWER:
Exercise 7.65: Problems by Topic – Atomic Spectroscopy
Part A
According to the quantum-mechanical model for the hydrogen atom, which of the following electron transitions would produce light with the longer wavelength: 2p?1s or 3p?1s?
ANSWER:
2p?1s

3p?1s

Correct
Exercise 7.55: Problems by Topic – Orbitals and Quantum Numbers
Part A
Which electron is, on average, closer to the nucleus: an electron in a 2s orbital or an electron in a 3s orbital?
ANSWER:
an electron in a 2s orbital

an electron in a 3s orbital

Correct
Exercise 7.41: Problems by Topic – Electromagnetic Radiation
Calculate the frequency of each of the following wave lengths of electromagnetic radiation.
Part A
488.0 nm (wavelength of argon laser)
Express your answer using four significant figures.
ANSWER:
Part B
503.0 nm (wavelength of maximum solar radiation)
Express your answer using four significant figures.
ANSWER:
Part C
337.1 nm (wavelength of nitrogen laser)
Express your answer using four significant figures.
ANSWER:

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