Question 1

What is the frequency of a helium-neon laser light with a wavelength of 632.8 nm? The speed of light is 3.00 × 108 m/s.

Accepted Answer

A) 4.74 × 1014 s-1 
B) 4.74 × 105 s-1 
C) 2.11 × 10-15 s-1 
D) 1.58 × 10-15 s-1 
A) 4.74 × 1014 s-1 
B) 4.74 × 105 s-1 
C) 2.11 × 10-15 s-1 
D) 1.58 × 10-15 s-1

Question 2

Which of the following is not true?

Accepted Answer

A) All moving objects have wave characteristics. 
B) For objects moving at a given speed,the larger the mass,the shorter the wavelength. 
C) The de Broglie relation and the Heisenberg uncertainty principle apply only to small particles. 
D) The Heisenberg uncertainty principle is an inequality. 
A) All moving objects have wave characteristics. 
B) For objects moving at a given speed,the larger the mass,the shorter the wavelength. 
C) The de Broglie relation and the Heisenberg uncertainty principle apply only to small particles. 
D) The Heisenberg uncertainty principle is an inequality.

Question 3

Two electromagnetic waves are represented below.  
-Wave (a)has the

Accepted Answer

A) longer wavelength and higher energy than wave (b). 
B) longer wavelength and lower energy than wave (b). 
C) shorter wavelength and higher energy than wave (b). 
D) shorter wavelength and lower energy than wave (b). 
A) longer wavelength and higher energy than wave (b). 
B) longer wavelength and lower energy than wave (b). 
C) shorter wavelength and higher energy than wave (b). 
D) shorter wavelength and lower energy than wave (b).

Question 4

The Balmer-Rydberg equation can be extended to ions with only one electron,such as He+.In that case it has the form: 1/λ = Z2R(1/m2 - 1/n2),where Z is the atomic number.What is the energy of the photon required to promote an electron in He+ from a 1s orbital to a 2p orbital?

Accepted Answer

A) (3/4)hcR 
B) 3hcR 
C) 4hcR 
D) 12hcR 
A) (3/4)hcR 
B) 3hcR 
C) 4hcR 
D) 12hcR

Question 5

What is the energy of a wavelength of light of 550 nm?

Accepted Answer

A) 1.09 × 10-31 J 
B) 3.61 × 10-37 J 
C) 3.61 × 10-19 J 
D) 1.09 × 10-22 J 
A) 1.09 × 10-31 J 
B) 3.61 × 10-37 J 
C) 3.61 × 10-19 J 
D) 1.09 × 10-22 J

Question 6

Which of the following have the same number of valence electrons?

Accepted Answer

A) Cs,Bi,At 
B) In,Pb,Bi 
C) N,P,As 
D) Xe,Rn,At 
A) Cs,Bi,At 
B) In,Pb,Bi 
C) N,P,As 
D) Xe,Rn,At

Question 7

What is the general valence-electron ground-state electron configuration for neutral alkaline earth metals?

Accepted Answer

A) ns1 
B) ns2 
C) 1s22s22p4 
D) 1s22s2 
A) ns1 
B) ns2 
C) 1s22s22p4 
D) 1s22s2

Question 8

A radio station that broadcasts at 99.1 MHz is broadcasting at a frequency of ________ s-1.

Accepted Answer

Question 9

-Which of the above fourth-shell orbitals is a 4py orbital?

Accepted Answer

A) orbital (a) 
B) orbital (b) 
C) orbital (c) 
D) orbital (d) 
A) orbital (a) 
B) orbital (b) 
C) orbital (c) 
D) orbital (d)

Question 10

Atoms of which element,indicated by letter on the periodic table,have the orbital-filling diagram shown below?

Accepted Answer

A) A 
B) B 
C) C 
D) D 
A) A 
B) B 
C) C 
D) D

Question 11

According to the Bohr model of the atom,when an electron goes from a higher-energy orbit to a lower-energy orbit,it ________ electromagnetic energy with an energy that is equal to the ________ between the two orbits.

Accepted Answer

emits,ener

Question 12

What is the general valence-electron ground-state electron configuration for neutral halogens?

Accepted Answer

A) ns1 
B) ns2np7 
C) 1s22s22p7 
D) 1s22s23p7 
A) ns1 
B) ns2np7 
C) 1s22s22p7 
D) 1s22s23p7

Question 13

If the quantum number ms had possible values +1/2,-1/2,what would be the maximum number of electrons that be placed in a single orbital?

Accepted Answer

A) one 
B) two 
C) three 
D) four 
A) one 
B) two 
C) three 
D) four

Question 14

Of the following,which atom has the largest atomic radius?

Accepted Answer

A) V 
B) Ni 
C) Sc 
D) Br 
A) V 
B) Ni 
C) Sc 
D) Br

Question 15

According to the Balmer-Rydberg equation,the transition from n = 6 to m = 2 results in a spectral line having which color?

Accepted Answer

A) blue 
B) blue-green 
C) indigo 
D) red 
A) blue 
B) blue-green 
C) indigo 
D) red

Question 16

Atoms of which element,indicated by letter on the periodic table,have the orbital-filling diagram shown below?

Accepted Answer

A) A 
B) B 
C) C 
D) D 
A) A 
B) B 
C) C 
D) D

Question 17

Which statement is false?

Accepted Answer

A) For any atom,the 4s orbital lies lower in energy than the 5s orbital. 
B) For a hydrogen atom,a 4s orbital,a 4p orbital,and a 4d orbital all have the same energy. 
C) The 4s orbital lies lower in energy than the 3d orbital for atoms K,Ca,Sc,and Ti. 
D) The 4s orbital lies lower in energy than the 3d orbital for Cu and Fe2+. 
A) For any atom,the 4s orbital lies lower in energy than the 5s orbital. 
B) For a hydrogen atom,a 4s orbital,a 4p orbital,and a 4d orbital all have the same energy. 
C) The 4s orbital lies lower in energy than the 3d orbital for atoms K,Ca,Sc,and Ti. 
D) The 4s orbital lies lower in energy than the 3d orbital for Cu and Fe2+.

Question 18

Of the following,which atom has the smallest atomic radius?

Accepted Answer

A) K 
B) As 
C) Rb 
D) Sb 
A) K 
B) As 
C) Rb 
D) Sb

Question 19

Which atom in each group (I and II)has the smallest atomic radius? (I)K,Zn,Br (II)Al,Ga,In

Accepted Answer

A) K;Al 
B) K;In 
C) Br;Al 
D) Br;In 
A) K;Al 
B) K;In 
C) Br;Al 
D) Br;In

Question 20

Compared to ultraviolet radiation,infrared radiation occurs at ________ wavelengths,________ frequencies,and ________ energies.

Accepted Answer

The answer of Compared to ultraviolet radiation,infrared radiation occurs at...

Exam 5: Periodicity and the Electronic Structure of Atoms

What is the frequency of a helium-neon laser light with a wavelength of 632.8 nm? The speed of light is 3.00 × 108 m/s.

Which of the following is not true?

Two electromagnetic waves are represented below. -Wave (a)has the

The Balmer-Rydberg equation can be extended to ions with only one electron,such as He+.In that case it has the form: 1/λ = Z2R(1/m2 - 1/n2),where Z is the atomic number.What is the energy of the photon required to promote an electron in He+ from a 1s orbital to a 2p orbital?

What is the energy of a wavelength of light of 550 nm?

Which of the following have the same number of valence electrons?

What is the general valence-electron ground-state electron configuration for neutral alkaline earth metals?

A radio station that broadcasts at 99.1 MHz is broadcasting at a frequency of ________ s-1.

-Which of the above fourth-shell orbitals is a 4py orbital?

Atoms of which element,indicated by letter on the periodic table,have the orbital-filling diagram shown below?

According to the Bohr model of the atom,when an electron goes from a higher-energy orbit to a lower-energy orbit,it ________ electromagnetic energy with an energy that is equal to the ________ between the two orbits.

What is the general valence-electron ground-state electron configuration for neutral halogens?

If the quantum number ms had possible values +1/2,-1/2,what would be the maximum number of electrons that be placed in a single orbital?

Of the following,which atom has the largest atomic radius?

According to the Balmer-Rydberg equation,the transition from n = 6 to m = 2 results in a spectral line having which color?

Atoms of which element,indicated by letter on the periodic table,have the orbital-filling diagram shown below?

Which statement is false?

Of the following,which atom has the smallest atomic radius?

Which atom in each group (I and II)has the smallest atomic radius? (I)K,Zn,Br (II)Al,Ga,In

Compared to ultraviolet radiation,infrared radiation occurs at ________ wavelengths,________ frequencies,and ________ energies.

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What is the frequency of a helium-neon laser light with a wavelength of 632.8 nm? The speed of light is 3.00 × 10⁸ m/s.

The Balmer-Rydberg equation can be extended to ions with only one electron,such as He⁺.In that case it has the form: 1/λ = Z²^R(1/m² - 1/n²),where Z is the atomic number.What is the energy of the photon required to promote an electron in He⁺ from a 1s orbital to a 2p orbital?

A radio station that broadcasts at 99.1 MHz is broadcasting at a frequency of ________ s^-1.

-Which of the above fourth-shell orbitals is a 4p_y orbital?

According to the Bohr model of the atom,when an electron goes from a higher-energy orbit to a lower-energy orbit,it electromagnetic energy with an energy that is equal to the between the two orbits.

If the quantum number m_s had possible values +1/2,-1/2,what would be the maximum number of electrons that be placed in a single orbital?

Compared to ultraviolet radiation,infrared radiation occurs at wavelengths, frequencies,and energies.