Question 1

A photon with a wavelength of $$2.480 	imes 10$$^{-7}$$ m strikes a metal surface. If the work function of the metal is 4.10$$ 	imes $$10^{-19} J$$, what is the maximum kinetic energy of the emitted electron?

Accepted Answer

$$4.91 	imes 10$$^{-19}$$ J

Question 2

Which equation correctly relates the energy of a photon to its frequency?

Accepted Answer

$$E = hf$$

Question 3

The threshold frequency $$f_0$$ for a metal is $$7.21 	imes 10$$^{14}$$ Hz. Calculate the threshold energy required to remove an electron from the metal.

Accepted Answer

$$4.78 	imes 10$$^{-19}$$ J

Question 4

Which of the following statements about the photoelectric effect is FALSE?

Accepted Answer

The kinetic energy of emitted electrons depends on the intensity of the incident light.

Question 5

A hydrogen atom transitions from $$n=4 to$$ $$n=2. $$What is the wavelength of the emitted photon?

Accepted Answer

$$486 nm$$

Question 6

Which quantum number determines the shape of an atomic orbital?

Accepted Answer

Azimuthal quantum number ($$l)$$

Question 7

Which of the following electron configurations represents a ground state atom?

Accepted Answer

$$1s^2$$ $$2s^2$$ $$2p^6$$ $$3s^2$$ $$3p^6$$ $$4s^2$$ $$3d^{10}$$ $$4p^5$$

Question 8

Which of the following statements about atomic emission spectra is TRUE?

Accepted Answer

They are unique for each element.

Question 9

What is the maximum number of electrons that can occupy the $$3d$$ subshell?

Accepted Answer

10

Question 10

Which of the following best describes the Pauli Exclusion Principle?

Accepted Answer

No two electrons in an atom can have the same set of four quantum numbers.

Question 11

A sodium atom emits light at $$589 nm. $$What is the energy of a single photon of this light?

Accepted Answer

$$2.25 	imes 10$$^{-19}$$ J

Question 12

Which of the following transitions in a hydrogen atom emits the highest energy photon?

Accepted Answer

$$n=2 to$$ $$n=1$$

Question 13

Which quantum number describes the orientation of an orbital in space?

Accepted Answer

Magnetic quantum number ($$m_l)$$

Question 14

Which of the following is a valid set of quantum numbers for an electron in a $$3d$$ orbital?

Accepted Answer

$$n=3, l=2, m_l=2, m_s=+\frac{1}{2}$$

Question 15

Which of the following best explains why atomic emission spectra are not continuous?

Accepted Answer

Electrons are restricted to specific energy levels.

Question 16

Which of the following statements about the Bohr model of the atom is INCORRECT?

Accepted Answer

Electrons can exist between energy levels.

Quantum Mechanics and Atomic Structure: Study Notes from General Chemistry Quiz

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