Question 1

Food can be cooked by ________ radiation.

Accepted Answer

A)  ultraviolet 
B)  gamma 
C)  microwave 
D)  X-ray 
E)  radio 
A)  ultraviolet 
B)  gamma 
C)  microwave 
D)  X-ray 
E)  radio

Question 2

How many orbitals are contained in the third principal level (n = 3) of a given atom?

Accepted Answer

A)  9 
B)  3 
C)  18 
D)  7 
E)  5 
A)  9 
B)  3 
C)  18 
D)  7 
E)  5

Question 3

Which of the following transitions (in a hydrogen atom) represent emission of the longest wavelength photon?

Accepted Answer

A)  n = 1 to n = 2 
B)  n = 3 to n = 1 
C)  n = 3 to n = 4 
D)  n = 4 to n = 2 
E)  n = 5 to n = 4 
A)  n = 1 to n = 2 
B)  n = 3 to n = 1 
C)  n = 3 to n = 4 
D)  n = 4 to n = 2 
E)  n = 5 to n = 4

Question 4

Identify the colour of a flame test for sodium.

Accepted Answer

A)  violet 
B)  red 
C)  white 
D)  yellow 
E)  blue 
A)  violet 
B)  red 
C)  white 
D)  yellow 
E)  blue

Question 5

How many different values of ml are possible in the 4f sublevel?

Accepted Answer

A)  1 
B)  7 
C)  3 
D)  5 
E)  2 
A)  1 
B)  7 
C)  3 
D)  5 
E)  2

Question 6

Determine the shortest frequency of light required to remove an electron from a sample of Ti metal if the binding energy of titanium is 3.14 × 103 kJ mol-1.

Accepted Answer

A)  7.87 × 1015 Hz 
B)  4.74 × 1015 Hz 
C)  2.11 × 1015 Hz 
D)  1.27 × 1015 Hz 
E)  6.19 × 1015 Hz 
A)  7.87 × 1015 Hz 
B)  4.74 × 1015 Hz 
C)  2.11 × 1015 Hz 
D)  1.27 × 1015 Hz 
E)  6.19 × 1015 Hz

Question 7

Calculate the frequency of the red light emitted by a neon sign with a wavelength of 659.9 nm.

Accepted Answer

A)  2.20 × 1014 s-1 
B)  1.98 × 1014 s-1 
C)  4.55 × 1014 s-1 
D)  5.05 × 1014 s-1 
E)  3.32 × 1014 s-1 
A)  2.20 × 1014 s-1 
B)  1.98 × 1014 s-1 
C)  4.55 × 1014 s-1 
D)  5.05 × 1014 s-1 
E)  3.32 × 1014 s-1

Question 8

How many different values of ml are possible in the 2p sublevel?

Accepted Answer

A)  2 
B)  1 
C)  3 
D)  5 
E)  7 
A)  2 
B)  1 
C)  3 
D)  5 
E)  7

Question 9

How many photons are contained in a flash of green light (525 nm) that contains 189 kJ of energy?

Accepted Answer

A)  5.67 × 1023 photons 
B)  2.01 × 1024 photons 
C)  1.25 × 1031 photons 
D)  4.99 × 1023 photons 
E)  7.99 × 1030 photons 
A)  5.67 × 1023 photons 
B)  2.01 × 1024 photons 
C)  1.25 × 1031 photons 
D)  4.99 × 1023 photons 
E)  7.99 × 1030 photons

Question 10

Define paramagnetic.

Accepted Answer

Paramagnetic is when

Question 11

Which of the following statements is FALSE?

Accepted Answer

A)  Spin quantum number is the fourth quantum number and it represents the spin of an electron. 
B)  No two electrons in an atom can have the same four quantum numbers. 
C)  Repulsion of one electron by other electrons is known as shielding. 
D)  An atom or ion that contains unpaired electrons is attracted to an external magnetic field and is called diamagnetic. 
E)  The electrons that are represented outside the core electrons are called valence electrons. 
A)  Spin quantum number is the fourth quantum number and it represents the spin of an electron. 
B)  No two electrons in an atom can have the same four quantum numbers. 
C)  Repulsion of one electron by other electrons is known as shielding. 
D)  An atom or ion that contains unpaired electrons is attracted to an external magnetic field and is called diamagnetic. 
E)  The electrons that are represented outside the core electrons are called valence electrons.

Question 12

In which orbital below would an electron (on average) be closest to the nucleus?

Accepted Answer

A)  2p 
B)  4s 
C)  2s 
D)  5d 
E)  3p 
A)  2p 
B)  4s 
C)  2s 
D)  5d 
E)  3p

Question 13

An electron initially in the n = 2 orbital of a hydrogen atom absorbs a photon with a wavelength of 656 nm. Calculate the final orbital, nf.

Accepted Answer

A)  3 
B)  5 
C)  2 
D)  4 
E)  6 
A)  3 
B)  5 
C)  2 
D)  4 
E)  6

Question 14

Calculate the final orbital, nf, of an electron in a hydrogen atom that starts at orbital n = 4 and undergoes an energy transition of -1.06 × 10-19 J.

Accepted Answer

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

Question 15

Calculate the energy of an electron in the orbital n = 5 of a hydrogen atom.

Accepted Answer

A)  -1.08 × 10-19 J 
B)  8.72 × 10-20 J 
C)  1.08 × 10-19 J 
D)  -8.72 × 10-20 J 
E)  -7.21 × 10-20 J 
A)  -1.08 × 10-19 J 
B)  8.72 × 10-20 J 
C)  1.08 × 10-19 J 
D)  -8.72 × 10-20 J 
E)  -7.21 × 10-20 J

Question 16

What is the maximum number of f orbitals that are possible in the same level?

Accepted Answer

A)  1 
B)  3 
C)  7 
D)  5 
E)  9 
A)  1 
B)  3 
C)  7 
D)  5 
E)  9

Question 17

Calculate the mass of a pickup truck travelling at 100.0 km h-1 and a de Broglie wavelength of 1.24 × 10-38 m.

Accepted Answer

A)  1924 kg 
B)  1134 kg 
C)  2347 kg 
D)  2841 kg 
E)  941.6 kg 
A)  1924 kg 
B)  1134 kg 
C)  2347 kg 
D)  2841 kg 
E)  941.6 kg

Question 18

Calculate the energy associated with an n = 2 to n = 5 transmission in a hydrogen atom.

Accepted Answer

A)  9.176 × 10-20 J 
B)  1.977 × 10-19 J 
C)  5.005 × 10-19 J 
D)  4.844 × 10-19 J 
E)  4.578 × 10-19 J 
A)  9.176 × 10-20 J 
B)  1.977 × 10-19 J 
C)  5.005 × 10-19 J 
D)  4.844 × 10-19 J 
E)  4.578 × 10-19 J

Question 19

How many of the following species are paramagnetic? Sc3⁺ Br⁻ Mg2⁺ Se

Accepted Answer

A)  0 
B)  2 
C)  1 
D)  4 
E)  3 
A)  0 
B)  2 
C)  1 
D)  4 
E)  3

Question 20

Identify the correct values for a 4f sublevel.

Accepted Answer

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

Exam 7: The Quantum-Mechanical Model of the Atom

Food can be cooked by ________ radiation.

How many orbitals are contained in the third principal level (n = 3) of a given atom?

Which of the following transitions (in a hydrogen atom) represent emission of the longest wavelength photon?

Identify the colour of a flame test for sodium.

How many different values of ml are possible in the 4f sublevel?

Determine the shortest frequency of light required to remove an electron from a sample of Ti metal if the binding energy of titanium is 3.14 × 103 kJ mol-1.

Calculate the frequency of the red light emitted by a neon sign with a wavelength of 659.9 nm.

How many different values of ml are possible in the 2p sublevel?

How many photons are contained in a flash of green light (525 nm) that contains 189 kJ of energy?

Define paramagnetic.

Which of the following statements is FALSE?

In which orbital below would an electron (on average) be closest to the nucleus?

An electron initially in the n = 2 orbital of a hydrogen atom absorbs a photon with a wavelength of 656 nm. Calculate the final orbital, nf.

Calculate the final orbital, nf, of an electron in a hydrogen atom that starts at orbital n = 4 and undergoes an energy transition of -1.06 × 10-19 J.

Calculate the energy of an electron in the orbital n = 5 of a hydrogen atom.

What is the maximum number of f orbitals that are possible in the same level?

Calculate the mass of a pickup truck travelling at 100.0 km h-1 and a de Broglie wavelength of 1.24 × 10-38 m.

Calculate the energy associated with an n = 2 to n = 5 transmission in a hydrogen atom.

How many of the following species are paramagnetic? Sc3⁺ Br⁻ Mg2⁺ Se

Identify the correct values for a 4f sublevel.

Units of Measurement for Physical and Chemical Change

Atoms and Elements

Molecules, Compounds, and Nomenclature

Chemical Reactions and Stoichiometry

Gases

Thermochemistry

Periodic Properties of the Elements

Chemical Bonding I: Lewis Theory

Chemical Bonding Ii: Molecular Shapes, Valence Bond Theory, and Molecular Orbital Theory

Liquids, Solids, and Intermolecular Forces

Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Aqueous Ionic Equilibrium

Gibbs Energy and Thermodynamics

Electrochemistry

Radioactivity and Nuclear Chemistry

Organic Chemistry I: Structures

Organic Chemistry Ii: Reactions

Biochemistry

Chemistry of the Nonmetals

Metals and Metallurgy

Transition Metals and Coordination Compounds

Filters

How many different values of m_l are possible in the 4f sublevel?

Determine the shortest frequency of light required to remove an electron from a sample of Ti metal if the binding energy of titanium is 3.14 × 10³ kJ mol^-1.

How many different values of m_l are possible in the 2p sublevel?

An electron initially in the n = 2 orbital of a hydrogen atom absorbs a photon with a wavelength of 656 nm. Calculate the final orbital, n_f.

Calculate the final orbital, n_f, of an electron in a hydrogen atom that starts at orbital n = 4 and undergoes an energy transition of -1.06 × 10^-19 J.

Calculate the mass of a pickup truck travelling at 100.0 km h^-1 and a de Broglie wavelength of 1.24 × 10^-38 m.

How many of the following species are paramagnetic? Sc³⁺ Br⁻ Mg²^⁺ Se