Question 1

What is the de Broglie wavelength of a ball of mass 200 g moving at 30 m/s? (h = 6.626 × 10-34 J ∙ s)

Accepted Answer

A) 1.1 × 10-34 m 
B) 2.2 × 10-34 m 
C) 4.5 × 10-28 m 
D) 6.7 × 10-27 m 
A) 1.1 × 10-34 m 
B) 2.2 × 10-34 m 
C) 4.5 × 10-28 m 
D) 6.7 × 10-27 m

Question 2

For the ground state of the hydrogen atom,which of the following numbers represents the correct value of the magnetic quantum number?

Accepted Answer

A) -1 
B) 0 
C) 1 
D) 2 
E) -2 
A) -1 
B) 0 
C) 1 
D) 2 
E) -2

Question 3

A hydrogen atom is in the 6h state.Which one of the following is not a magnetic quantum number for that state?

Accepted Answer

A) 0 
B) 1 
C) 2 
D) 4 
E) 6 
A) 0 
B) 1 
C) 2 
D) 4 
E) 6

Question 4

How many electrons can be found with principal quantum number $n = 3$ in a suitably heavy atom?

Accepted Answer

A) 18 
B) 6 
C) 20 
D) 9 
A) 18 
B) 6 
C) 20 
D) 9

Question 5

What is the shortest wavelength in the Paschen series?

Accepted Answer

A) 410.2 nm 
B) 410.2 μm 
C) 365 nm 
D) 820.4 nm 
E) 820.4 μm 
A) 410.2 nm 
B) 410.2 μm 
C) 365 nm 
D) 820.4 nm 
E) 820.4 μm

Question 6

Calculate the orbital Bohr radius of the $n = 2$ excited state in a hydrogen atom. $( r 1 = 0.0529 \mathrm {~nm} )$

Accepted Answer

A) 0.212 nm 
B) 0.106 nm 
C) 0.170 nm 
D) 0.244 nm 
A) 0.212 nm 
B) 0.106 nm 
C) 0.170 nm 
D) 0.244 nm

Question 7

How many values of the magnetic quantum number,mℓ,correspond to a value of ℓ = 4?

Accepted Answer

A) 3 
B) 5 
C) 8 
D) 9 
E) 7 
A) 3 
B) 5 
C) 8 
D) 9 
E) 7

Question 8

If the maximum possible accuracy in measuring the position of a particle increases,the maximum possible accuracy in measuring its velocity will

Accepted Answer

A) increase. 
B) decrease. 
C) not be affected. 
A) increase. 
B) decrease. 
C) not be affected.

Question 9

An atom with atomic number 6 is in its ground state.How many electrons are in its outermost shell?

Accepted Answer

The answer of An atom with atomic number 6 is...

Question 10

When an atom changes its energy state from n = 4 to n = 2

Accepted Answer

A) a photon is emitted. 
B) a photon is absorbed. 
C) two photons are emitted. 
D) two photons are absorbed. 
E) None of the given answers are correct. 
A) a photon is emitted. 
B) a photon is absorbed. 
C) two photons are emitted. 
D) two photons are absorbed. 
E) None of the given answers are correct.

Question 11

According to Pauli's exclusion principle,how many electrons in an atom may have a particular set of quantum numbers?

Accepted Answer

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

Question 12

What is the wavelength of the photon emitted when a hydrogen atom which is in the initial state n = 8 transitions to the final state n = 2? (c = 3.00 × 108 m/s,h = 6.626 × 10-34 J ∙ s,1 eV = 1.60 × 10-19 J)

Accepted Answer

A) 205 nm 
B) 104 nm 
C) 389 nm 
D) 486 nm 
E) 610 nm 
A) 205 nm 
B) 104 nm 
C) 389 nm 
D) 486 nm 
E) 610 nm

Question 13

Find the de Broglie wavelength of a 1.30-kg missile moving at $28.10 \mathrm {~m} / \mathrm { s }$ (h = 6.626 × 10-34 J ∙ s)

Accepted Answer

A) 1.81 × 10-35 m 
B) 2.05 × 10-35 m 
C) 2.28 × 10-35 m 
D) 2.57 × 10-35 m 
A) 1.81 × 10-35 m 
B) 2.05 × 10-35 m 
C) 2.28 × 10-35 m 
D) 2.57 × 10-35 m

Question 14

What is the maximum number of electrons that can occupy the g subshell?

Accepted Answer

A) 10 
B) 14 
C) 18 
D) 22 
A) 10 
B) 14 
C) 18 
D) 22

Question 15

A hydrogen atom is in the 6h state.How many electrons are allowed in this state?

Accepted Answer

A) 22 
B) 18 
C) 14 
D) 10 
E) 6 
A) 22 
B) 18 
C) 14 
D) 10 
E) 6

Question 16

What is the longest wavelength in the Paschen series?

Accepted Answer

A) 2.01 nm 
B) 2.01 μm 
C) 365 nm 
D) 1.88 nm 
E) 1.88 μm 
A) 2.01 nm 
B) 2.01 μm 
C) 365 nm 
D) 1.88 nm 
E) 1.88 μm

Question 17

The electrons in a beam are moving at 18 m/s.(melectron = 9.11 × 10-31 kg,h = 6.626 × 10-34 J ∙ s)
(a)What is its de Broglie wavelength these electrons?
(b)If the electron beam falls normally on a diffraction grating,what would have to be the spacing between slits in the grating to give a first-order maximum at an angle of 30° with the normal to the grating?

Accepted Answer

Question 18

Hydrogen atoms can emit four spectral lines with visible colors from red to violet.These four visible lines emitted by hydrogen atoms are produced by electrons

Accepted Answer

A) that start in the n = 2 level. 
B) that end up in the n = 2 level. 
C) that end up in the n = 3 level. 
D) that end up in the ground state. 
E) that start in the ground state. 
A) that start in the n = 2 level. 
B) that end up in the n = 2 level. 
C) that end up in the n = 3 level. 
D) that end up in the ground state. 
E) that start in the ground state.

Question 19

Calculate the kinetic energy,in electron-volts,of a neutron that has a de Broglie wavelength of $7.2 \times 10^{- 12} \mathrm {~m}$ (mneutron = 1.675 × 10-27 kg,1 eV = 1.6 × 10-19 J,h = 6.626 × 10-34 J ∙ s)

Accepted Answer

Question 20

What is the energy (in electron-volts)of the n = 3 state of atomic hydrogen?

Accepted Answer

The answer of What is the energy (in electron-volts)of the...

Exam 28: Atomic Physics

What is the de Broglie wavelength of a ball of mass 200 g moving at 30 m/s? (h = 6.626 × 10-34 J ∙ s)

For the ground state of the hydrogen atom,which of the following numbers represents the correct value of the magnetic quantum number?

A hydrogen atom is in the 6h state.Which one of the following is not a magnetic quantum number for that state?

How many electrons can be found with principal quantum number n=3n = 3n=3 in a suitably heavy atom?

What is the shortest wavelength in the Paschen series?

Calculate the orbital Bohr radius of the n=2n = 2n=2 excited state in a hydrogen atom. (r1=0.0529 nm)( r 1 = 0.0529 \mathrm {~nm} )(r1=0.0529 nm)

How many values of the magnetic quantum number,mℓ,correspond to a value of ℓ = 4?

If the maximum possible accuracy in measuring the position of a particle increases,the maximum possible accuracy in measuring its velocity will

An atom with atomic number 6 is in its ground state.How many electrons are in its outermost shell?

When an atom changes its energy state from n = 4 to n = 2

According to Pauli's exclusion principle,how many electrons in an atom may have a particular set of quantum numbers?

What is the wavelength of the photon emitted when a hydrogen atom which is in the initial state n = 8 transitions to the final state n = 2? (c = 3.00 × 108 m/s,h = 6.626 × 10-34 J ∙ s,1 eV = 1.60 × 10-19 J)

Find the de Broglie wavelength of a 1.30-kg missile moving at 28.10 m/s28.10 \mathrm {~m} / \mathrm { s }28.10 m/s (h = 6.626 × 10-34 J ∙ s)

What is the maximum number of electrons that can occupy the g subshell?

A hydrogen atom is in the 6h state.How many electrons are allowed in this state?

What is the longest wavelength in the Paschen series?

Hydrogen atoms can emit four spectral lines with visible colors from red to violet.These four visible lines emitted by hydrogen atoms are produced by electrons

Calculate the kinetic energy,in electron-volts,of a neutron that has a de Broglie wavelength of 7.2×10−12 m7.2 \times 10^{- 12} \mathrm {~m}7.2×10−12 m (mneutron = 1.675 × 10-27 kg,1 eV = 1.6 × 10-19 J,h = 6.626 × 10-34 J ∙ s)

What is the energy (in electron-volts)of the n = 3 state of atomic hydrogen?

Introduction

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Applying Newtons Laws

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Filters

What is the de Broglie wavelength of a ball of mass 200 g moving at 30 m/s? (h = 6.626 × 10^-34 J ∙ s)

How many electrons can be found with principal quantum number $n = 3$ in a suitably heavy atom?

Calculate the orbital Bohr radius of the $n = 2$ excited state in a hydrogen atom. $( r 1 = 0.0529 \mathrm {~nm} )$

How many values of the magnetic quantum number,m_ℓ,correspond to a value of ℓ = 4?

What is the wavelength of the photon emitted when a hydrogen atom which is in the initial state n= 8 transitions to the final state n = 2? (c = 3.00 × 10⁸ m/s,h = 6.626 × 10^-34 J ∙ s,1 eV = 1.60 × 10^-19J)

Find the de Broglie wavelength of a 1.30-kg missile moving at $28.10 \mathrm {~m} / \mathrm { s }$ (h = 6.626 × 10^-34 J ∙ s)

Calculate the kinetic energy,in electron-volts,of a neutron that has a de Broglie wavelength of $7.2 \times 10^{- 12} \mathrm {~m}$ (m_neutr_on = 1.675 × 10^-27 kg,1 eV = 1.6 × 10^-19 J,h = 6.626 × 10^-34J ∙ s)