Question 1

Consider a one-dimensional particle in a box of length 2L and one of length 3L .Which of the following is true?

Accepted Answer

A)  The energy levels n = 1 and n = 2 are closer together for the box of length 3L. 
B)  The energy levels n = 1 and n = 2 are closer together for the box of length 2L. 
C)  The energy levels for the box of length 3L are all higher than those for the box of length 2L. 
D)  The zero-point energy of the two boxes is the same. 
E)  The zero-point energy of the box of length 2L is smaller than that of the box of length 3L. 
A)  The energy levels n = 1 and n = 2 are closer together for the box of length 3L. 
B)  The energy levels n = 1 and n = 2 are closer together for the box of length 2L. 
C)  The energy levels for the box of length 3L are all higher than those for the box of length 2L. 
D)  The zero-point energy of the two boxes is the same. 
E)  The zero-point energy of the box of length 2L is smaller than that of the box of length 3L.

Question 2

From the data below, which elements are likely to be nonmetals?
$$\begin{array} { l l } 
\text { Element } & \text { First ionization energy, } \mathrm { kJ } \cdot \mathrm { mol } ^ { - 1 } \
\hline 1 & 1310 \
2 & 980 \
3 & 418 \
4 & 2080 \
5 & 947
\end{array}$$

Accepted Answer

A)  3 and 5 
B)  3 only 
C)  1 and 4 
D)  1 and 2 
E)  2 and 5 
A)  3 and 5 
B)  3 only 
C)  1 and 4 
D)  1 and 2 
E)  2 and 5

Question 3

When radiation has a frequency of 6.9*1017 Hz, what is its wavelength?

Accepted Answer

A)  4.3*10-10 m 
B)  3.4*10-10 m 
C)  3.0*10-8 m 
D)  2.3*10-9 m 
E)  2.3*10-8 nm 
A)  4.3*10-10 m 
B)  3.4*10-10 m 
C)  3.0*10-8 m 
D)  2.3*10-9 m 
E)  2.3*10-8 nm

Question 4

How many unpaired electrons exist in the ground state of a Cu+ ion?

Accepted Answer

A)  0 
B)  2 
C)  1 
D)  3 
E)  5 
A)  0 
B)  2 
C)  1 
D)  3 
E)  5

Question 5

What shape do the p-orbitals have that each accommodates one nodal plane?

Accepted Answer

A)  A spherical shape. 
B)  A dumbbell shape centered at the nucleus. 
C)  A clover leaf shape centered at the nucleus. 
D)  A clover leaf shape centered above and below the nucleus. 
E)  A toroidal shape around a dumbbell. 
A)  A spherical shape. 
B)  A dumbbell shape centered at the nucleus. 
C)  A clover leaf shape centered at the nucleus. 
D)  A clover leaf shape centered above and below the nucleus. 
E)  A toroidal shape around a dumbbell.

Question 6

Which of the following experiments most directly supports de Broglie's hypothesis of the wave nature of matter?

Accepted Answer

A)  Black-body radiation 
B)  The photoelectric effect 
C) $a$ -particle scattering by a metal foil 
D)  Electron diffraction by a crystal 
E)  The emission spectrum of the hydrogen atom 
A)  Black-body radiation 
B)  The photoelectric effect 
C) $a$ -particle scattering by a metal foil 
D)  Electron diffraction by a crystal 
E)  The emission spectrum of the hydrogen atom

Question 7

How many unpaired electrons are in a chromium trivalent ion?

Accepted Answer

A)  0 
B)  5 
C)  6 
D)  4 
E)  3 
A)  0 
B)  5 
C)  6 
D)  4 
E)  3

Question 8

How many unpaired electrons are in a chromium atom?

Accepted Answer

A)  0 
B)  5 
C)  6 
D)  4 
E)  3 
A)  0 
B)  5 
C)  6 
D)  4 
E)  3

Question 9

Where is the nodal plane for the px orbital?

Accepted Answer

A)  On the x-z plane. 
B)  On the y-z plane. 
C)  On the x-y plane. 
D)  Midway between the x-y and the y-z plane. 
E)  The px orbital does not have a nodal plane. 
A)  On the x-z plane. 
B)  On the y-z plane. 
C)  On the x-y plane. 
D)  Midway between the x-y and the y-z plane. 
E)  The px orbital does not have a nodal plane.

Question 10

Which set of quantum numbers could correspond to a 4f-orbital?

Accepted Answer

A)  n = 4, l = 4, ml = +3 
B)  n = 4, l = 3, ml = +4 
C)  n = 4, l = 3, ml = -3 
D)  n = 3, l = 2, ml = +1 
E)  n = 3, l = 2, ml = 0 
A)  n = 4, l = 4, ml = +3 
B)  n = 4, l = 3, ml = +4 
C)  n = 4, l = 3, ml = -3 
D)  n = 3, l = 2, ml = +1 
E)  n = 3, l = 2, ml = 0

Question 11

Nodal planes in orbitals can be accounted for by the wavelike behavior of electrons.

Accepted Answer

A) True 
 B)False

Question 12

What magnitude of wavelength and frequency does X-radiation have?

Accepted Answer

A)  Small wavelength and low frequency. 
B)  Small wavelength and high frequency. 
C)  Large wavelength and low frequency. 
D)  Large wavelength and high frequency. 
E)  Wavelength almost the same as that in visible light. 
A)  Small wavelength and low frequency. 
B)  Small wavelength and high frequency. 
C)  Large wavelength and low frequency. 
D)  Large wavelength and high frequency. 
E)  Wavelength almost the same as that in visible light.

Question 13

The ultraviolet range encompasses what wavelengths?

Accepted Answer

A)  100 - 450nm. 
B)  530 - 580 nm. 
C)  1 - 50 nm. 
D)  10 - 80 nm. 
E)  420 - 500 nm. 
A)  100 - 450nm. 
B)  530 - 580 nm. 
C)  1 - 50 nm. 
D)  10 - 80 nm. 
E)  420 - 500 nm.

Question 14

If the second ionization energy of copper is 1958 kJ·mol-1, the first ionization energy is likely to be greater than 1958 kJ·mol-1.

Accepted Answer

A) True 
 B)False

Question 15

Which of the following emission lines corresponds to part of the Balmer series of lines in the spectrum of a hydrogen atom?
(a)N2 $\rarr$n1
(b)N4 $\rarr$n2
(c)N4 $\rarr$n1
(d)N3 $\rarr$n2
(e)N4 $\rarr$ n3

Accepted Answer

A)  (b) and (d) 
B)  (a), (d), and (e) 
C)  (a) and (c) 
D)  (e) 
E)  (b) and (c) 
A)  (b) and (d) 
B)  (a), (d), and (e) 
C)  (a) and (c) 
D)  (e) 
E)  (b) and (c)

Question 16

In a one-dimensional particle in a box, for n = 6,How many wavelengths equal the size of the box?

Accepted Answer

A)  0 
B)  3 
C)  1 
D)  12 
E)  6 
A)  0 
B)  3 
C)  1 
D)  12 
E)  6

Question 17

Which of the following statements is incorrect?

Accepted Answer

A)  For a one-dimensional particle in a box, as the mass of the particle becomes larger the separation between neighboring energy levels increases. 
B)  For a one-dimensional particle in a box, the separation between neighboring energy levels increases as the length of the container increases. 
C)  For a one-dimensional particle in a box, the energy separation between neighboring energy levels has the value h2/8mL2 when the walls of the box are infinitely far apart. 
D)  Argon atoms in a cylinder can be treated as though their translational energy were quantized. 
E)  A billiard ball on a table has a completely negligible zero-point energy. 
A)  For a one-dimensional particle in a box, as the mass of the particle becomes larger the separation between neighboring energy levels increases. 
B)  For a one-dimensional particle in a box, the separation between neighboring energy levels increases as the length of the container increases. 
C)  For a one-dimensional particle in a box, the energy separation between neighboring energy levels has the value h2/8mL2 when the walls of the box are infinitely far apart. 
D)  Argon atoms in a cylinder can be treated as though their translational energy were quantized. 
E)  A billiard ball on a table has a completely negligible zero-point energy.

Question 18

What is the general wavelength of visible light?

Accepted Answer

A)  1 - 100 nm 
B)  100 - 400 nm 
C)  420 - 700 nm 
D)  750 - 1,000 nm 
E)  > 1,000 nm 
A)  1 - 100 nm 
B)  100 - 400 nm 
C)  420 - 700 nm 
D)  750 - 1,000 nm 
E)  > 1,000 nm

Question 19

An electron is confined to a one-dimensional box 200 pm in length, calculate the wavelength of light required to promote the electron from the ground state to the first excited state.

Accepted Answer

A)  329 pm 
B)  263 pm 
C)  165 pm 
D)  439 pm 
E)  1320 pm 
A)  329 pm 
B)  263 pm 
C)  165 pm 
D)  439 pm 
E)  1320 pm

Question 20

Which set of quantum numbers corresponds to the electrons in He?

Accepted Answer

A)  n = 1, l = 0, ml = 1 
B)  n = 1, l = 0, ml = 0 
C)  n = 1, l = 1, ml = -0 
D)  n = 1, l = 0, ml = -1 
E)  n = 1, l = 2, ml = 0 
A)  n = 1, l = 0, ml = 1 
B)  n = 1, l = 0, ml = 0 
C)  n = 1, l = 1, ml = -0 
D)  n = 1, l = 0, ml = -1 
E)  n = 1, l = 2, ml = 0

Consider a one-dimensional particle in a box of length 2L and one of length 3L .Which of the following is true?

From the data below, which elements are likely to be nonmetals? Element First ionization energy, \cdot 1 1310 2 980 3 418 4 2080 5 947

When radiation has a frequency of 6.9*10¹⁷ Hz, what is its wavelength?

How many unpaired electrons exist in the ground state of a Cu⁺ ion?

What shape do the p-orbitals have that each accommodates one nodal plane?

Which of the following experiments most directly supports de Broglie's hypothesis of the wave nature of matter?

How many unpaired electrons are in a chromium trivalent ion?

How many unpaired electrons are in a chromium atom?

Where is the nodal plane for the p_x orbital?

Which set of quantum numbers could correspond to a 4f-orbital?

Nodal planes in orbitals can be accounted for by the wavelike behavior of electrons.

What magnitude of wavelength and frequency does X-radiation have?

The ultraviolet range encompasses what wavelengths?

If the second ionization energy of copper is 1958 kJ·mol^-1, the first ionization energy is likely to be greater than 1958 kJ·mol^-1.

Which of the following emission lines corresponds to part of the Balmer series of lines in the spectrum of a hydrogen atom? (a)N₂ $\rarr$ n₁ (b)N₄ $\rarr$ n₂ (c)N₄ $\rarr$ n₁ (d)N₃ $\rarr$ n₂ (e)N₄ $\rarr$ n₃

In a one-dimensional particle in a box, for n = 6,How many wavelengths equal the size of the box?

Which of the following statements is incorrect?

What is the general wavelength of visible light?

An electron is confined to a one-dimensional box 200 pm in length, calculate the wavelength of light required to promote the electron from the ground state to the first excited state.

Which set of quantum numbers corresponds to the electrons in He?

Molecules

States of Matter

Thermodynamics

Equilibrium

Reactions

Kinetics

The Main-Group Elements

The D-Block Elements

Nuclear Chemistry

Organic Chemistry

Filters

Exam 1: Atoms

Consider a one-dimensional particle in a box of length 2L and one of length 3L .Which of the following is true?

From the data below, which elements are likely to be nonmetals? Element First ionization energy, \cdot 1 1310 2 980 3 418 4 2080 5 947

When radiation has a frequency of 6.9*1017 Hz, what is its wavelength?

How many unpaired electrons exist in the ground state of a Cu+ ion?

What shape do the p-orbitals have that each accommodates one nodal plane?

Which of the following experiments most directly supports de Broglie's hypothesis of the wave nature of matter?

How many unpaired electrons are in a chromium trivalent ion?

How many unpaired electrons are in a chromium atom?

Where is the nodal plane for the px orbital?

Which set of quantum numbers could correspond to a 4f-orbital?

Nodal planes in orbitals can be accounted for by the wavelike behavior of electrons.

What magnitude of wavelength and frequency does X-radiation have?

The ultraviolet range encompasses what wavelengths?

If the second ionization energy of copper is 1958 kJ·mol-1, the first ionization energy is likely to be greater than 1958 kJ·mol-1.

Which of the following emission lines corresponds to part of the Balmer series of lines in the spectrum of a hydrogen atom? (a)N2 →\rarr→ n1 (b)N4 →\rarr→ n2 (c)N4 →\rarr→ n1 (d)N3 →\rarr→ n2 (e)N4 →\rarr→ n3

In a one-dimensional particle in a box, for n = 6,How many wavelengths equal the size of the box?

Which of the following statements is incorrect?

What is the general wavelength of visible light?

An electron is confined to a one-dimensional box 200 pm in length, calculate the wavelength of light required to promote the electron from the ground state to the first excited state.

Which set of quantum numbers corresponds to the electrons in He?

Molecules

States of Matter

Thermodynamics

Equilibrium

Reactions

Kinetics

The Main-Group Elements

The D-Block Elements

Nuclear Chemistry

Organic Chemistry

Filters

When radiation has a frequency of 6.9*10¹⁷ Hz, what is its wavelength?

How many unpaired electrons exist in the ground state of a Cu⁺ ion?

Where is the nodal plane for the p_x orbital?

If the second ionization energy of copper is 1958 kJ·mol^-1, the first ionization energy is likely to be greater than 1958 kJ·mol^-1.

Which of the following emission lines corresponds to part of the Balmer series of lines in the spectrum of a hydrogen atom? (a)N₂ $\rarr$ n₁ (b)N₄ $\rarr$ n₂ (c)N₄ $\rarr$ n₁ (d)N₃ $\rarr$ n₂ (e)N₄ $\rarr$ n₃