Consider the following orderings. I. Al < Si < P < Cl II. Be < Mg < Ca < Sr III. I < Br < Cl < F IV. NaS1U1P1+S1S1P0 < MgS1U1P12+S1S1P0 < AlS1U1P13+S1S1P0 < SiS1U1P14+S1S1P0 -Which of the following statements is true of second ionization energies?

A) That of Al is higher than that of Mg because Mg wants to lose the second electron, so it is easier to take the second electron away. B) That of Al is lower than that of Mg because the second electron taken from Al is in a p orbital, so it is easier to take away. C) That of Al is lower than that of Mg because Mg wants to lose the second electron, so the energy change is greater. D) The second ionization energies are equal for Al and Mg. E) That of Al is higher than that of Mg because the electrons are taken from the same energy level, but the Al atom has one more proton. A) That of Al is higher than that of Mg because Mg wants to lose the second electron, so it is easier to take the second electron away. B) That of Al is lower than that of Mg because the second electron taken from Al is in a p orbital, so it is easier to take away. C) That of Al is lower than that of Mg because Mg wants to lose the second electron, so the energy change is greater. D) The second ionization energies are equal for Al and Mg. E) That of Al is higher than that of Mg because the electrons are taken from the same energy level, but the Al atom has one more proton.

Consider the following orderings. I. Al < Si < P < Cl II. Be < Mg < Ca < Sr III. I < Br < Cl < F IV. NaS1U1P1+S1S1P0 < MgS1U1P12+S1S1P0 < AlS1U1P13+S1S1P0 < SiS1U1P14+S1S1P0 -Which of these give(s) a correct trend in size?

A) II only B) IV only C) II, IV D) III E) I A) II only B) IV only C) II, IV D) III E) I

What is the electron configuration of Cr3+?

A) [Ar] 4s23d1 B) [Ar] 3d3 C) [Ar] 4s23d4 D) [Ar] 4s13d2 E) none of these A) [Ar] 4s23d1 B) [Ar] 3d3 C) [Ar] 4s23d4 D) [Ar] 4s13d2 E) none of these

Exam 12: Quantum Mechanics and Atomic Theory

Consider the following portion of the energy-level diagram for hydrogen: -In the hydrogen spectrum, what is the wavelength of light associated with the n = 2 to n = 1 electron transition?

(Multiple Choice)

4.8/5

(33)

Question 61

Given the electron configurations of the following neutral atoms, identify the element, and state the number of unpaired electrons in its ground state. -[Xe] 4f¹⁴6s²5d¹⁰6p²

(Essay)

4.8/5

(37)

Question 62

An atom of nitrogen contains 7 electrons. How many of these electrons are in p orbitals?

(Multiple Choice)

4.9/5

(34)

Question 63

What is the electron configuration for the barium atom?

(Multiple Choice)

4.9/5

(35)

Question 64

Consider the following orderings. I. Al < Si < P < Cl II. Be < Mg < Ca < Sr III. I < Br < Cl < F IV. Na⁺ < Mg²⁺ < Al³⁺ < Si⁴⁺ -Which of the following statements is true of second ionization energies?

(Multiple Choice)

4.7/5

(41)

Question 65

For the set of elements C, N, O, and F, which element has the smallest ionization energy? Explain any deviation from the expected pattern.

(Essay)

4.9/5

(45)

Question 66

In Bohr's atomic theory, when an electron moves from one energy level to another energy level more distant from the nucleus,

(Multiple Choice)

4.9/5

(35)

Question 67

The number of orbitals having a given value of l is equal to

(Multiple Choice)

4.8/5

(36)

Question 68

Which of the following statements about quantum theory is incorrect?

(Multiple Choice)

4.7/5

(35)

Question 69

Write the electron configuration for the following: -Ca

(Essay)

4.8/5

(33)

Question 70

Consider the following orderings. I. Al < Si < P < Cl II. Be < Mg < Ca < Sr III. I < Br < Cl < F IV. Na⁺ < Mg²⁺ < Al³⁺ < Si⁴⁺ -Which of these give(s) a correct trend in size?

(Multiple Choice)

4.9/5

(32)

Question 71

what is the speed of the ejected electron? m_e = 9.11 x 10^-31 kg

(Multiple Choice)

4.9/5

(43)

Question 72

What is the electron configuration of Cr³⁺?

(Multiple Choice)

4.9/5

(36)

Question 73

For an electron in a one-dimensional box, what is the minimum energy to excite the electron from the ground state?

(Multiple Choice)

4.7/5

(31)

Question 74

Which element has the most unpaired electrons in its ground state?

(Multiple Choice)

4.8/5

(39)

Question 75

In general, Z is less than Z_eff.

(True/False)

4.9/5

(31)

Question 76

In an investigation of the electronic absorption spectrum of a particular element, it is found that a photon having $\lambda$ = 500 nm provides just enough energy to promote an electron from the second quantum level to the third. From this information, we can deduce

(Multiple Choice)

4.7/5

(30)

Question 77

Write the electron configuration of Ni²⁺.

(Essay)

4.8/5

(39)

Question 78

Of the following elements, which has occupied d orbitals in its ground-state neutral atoms?

(Multiple Choice)

4.8/5

(31)

Question 79

From the following list of observations, choose the one that most clearly supports the conclusion that electrons in atoms have quantized energies.

(Multiple Choice)

4.8/5

(36)

Question 80

Showing 61 - 80 of 120

Consider the following portion of the energy-level diagram for hydrogen: -In the hydrogen spectrum, what is the wavelength of light associated with the n = 2 to n = 1 electron transition?

Given the electron configurations of the following neutral atoms, identify the element, and state the number of unpaired electrons in its ground state. -[Xe] 4f¹⁴6s²5d¹⁰6p²

An atom of nitrogen contains 7 electrons. How many of these electrons are in p orbitals?

What is the electron configuration for the barium atom?

Consider the following orderings. I. Al < Si < P < Cl II. Be < Mg < Ca < Sr III. I < Br < Cl < F IV. Na⁺ < Mg²⁺ < Al³⁺ < Si⁴⁺ -Which of the following statements is true of second ionization energies?

For the set of elements C, N, O, and F, which element has the smallest ionization energy? Explain any deviation from the expected pattern.

In Bohr's atomic theory, when an electron moves from one energy level to another energy level more distant from the nucleus,

The number of orbitals having a given value of l is equal to

Which of the following statements about quantum theory is incorrect?

Write the electron configuration for the following: -Ca

Consider the following orderings. I. Al < Si < P < Cl II. Be < Mg < Ca < Sr III. I < Br < Cl < F IV. Na⁺ < Mg²⁺ < Al³⁺ < Si⁴⁺ -Which of these give(s) a correct trend in size?

what is the speed of the ejected electron? m_e = 9.11 x 10^-31 kg

What is the electron configuration of Cr³⁺?

For an electron in a one-dimensional box, what is the minimum energy to excite the electron from the ground state?

Which element has the most unpaired electrons in its ground state?

In general, Z is less than Z_eff.

In an investigation of the electronic absorption spectrum of a particular element, it is found that a photon having $\lambda$ = 500 nm provides just enough energy to promote an electron from the second quantum level to the third. From this information, we can deduce

Write the electron configuration of Ni²⁺.

Of the following elements, which has occupied d orbitals in its ground-state neutral atoms?

From the following list of observations, choose the one that most clearly supports the conclusion that electrons in atoms have quantized energies.

Atoms, Molecules, and Ions

Stoichiometry

Chemical Reactions and Solutions Stoichiometry

Gases

Chemical Equilibrium

Acids and Bases

Applications of Aqueous Equilibria

Energy, Enthalpy, and Thermochemistry

Spontaneity, Entropy, and Free Energy

Electrochemistry

Bonding: General Concepts

Covalent Bonding: Orbitals

Chemical Kinetics

Liquids and Solids

Properties of Solutions

The Representative Elements

Transition Metals and Coordination Chemistry

The Nucleus: a Chemists View

Organic and Biochemical Molecules

Filters

Exam 12: Quantum Mechanics and Atomic Theory

Consider the following portion of the energy-level diagram for hydrogen: -In the hydrogen spectrum, what is the wavelength of light associated with the n = 2 to n = 1 electron transition?

Given the electron configurations of the following neutral atoms, identify the element, and state the number of unpaired electrons in its ground state. -[Xe] 4f146s25d106p2

An atom of nitrogen contains 7 electrons. How many of these electrons are in p orbitals?

What is the electron configuration for the barium atom?

Consider the following orderings. I. Al < Si < P < Cl II. Be < Mg < Ca < Sr III. I < Br < Cl < F IV. Na+ < Mg2+ < Al3+ < Si4+ -Which of the following statements is true of second ionization energies?

For the set of elements C, N, O, and F, which element has the smallest ionization energy? Explain any deviation from the expected pattern.

In Bohr's atomic theory, when an electron moves from one energy level to another energy level more distant from the nucleus,

The number of orbitals having a given value of l is equal to

Which of the following statements about quantum theory is incorrect?

Write the electron configuration for the following: -Ca

Consider the following orderings. I. Al < Si < P < Cl II. Be < Mg < Ca < Sr III. I < Br < Cl < F IV. Na+ < Mg2+ < Al3+ < Si4+ -Which of these give(s) a correct trend in size?

what is the speed of the ejected electron? me = 9.11 x 10-31 kg

What is the electron configuration of Cr3+?

For an electron in a one-dimensional box, what is the minimum energy to excite the electron from the ground state?

Which element has the most unpaired electrons in its ground state?

In general, Z is less than Zeff.

In an investigation of the electronic absorption spectrum of a particular element, it is found that a photon having λ\lambdaλ = 500 nm provides just enough energy to promote an electron from the second quantum level to the third. From this information, we can deduce

Write the electron configuration of Ni2+.

Of the following elements, which has occupied d orbitals in its ground-state neutral atoms?

From the following list of observations, choose the one that most clearly supports the conclusion that electrons in atoms have quantized energies.

Atoms, Molecules, and Ions

Stoichiometry

Chemical Reactions and Solutions Stoichiometry

Gases

Chemical Equilibrium

Acids and Bases

Applications of Aqueous Equilibria

Energy, Enthalpy, and Thermochemistry

Spontaneity, Entropy, and Free Energy

Electrochemistry

Bonding: General Concepts

Covalent Bonding: Orbitals

Chemical Kinetics

Liquids and Solids

Properties of Solutions

The Representative Elements

Transition Metals and Coordination Chemistry

The Nucleus: a Chemists View

Organic and Biochemical Molecules

Filters

Given the electron configurations of the following neutral atoms, identify the element, and state the number of unpaired electrons in its ground state. -[Xe] 4f¹⁴6s²5d¹⁰6p²

Consider the following orderings. I. Al < Si < P < Cl II. Be < Mg < Ca < Sr III. I < Br < Cl < F IV. Na⁺ < Mg²⁺ < Al³⁺ < Si⁴⁺ -Which of the following statements is true of second ionization energies?

Consider the following orderings. I. Al < Si < P < Cl II. Be < Mg < Ca < Sr III. I < Br < Cl < F IV. Na⁺ < Mg²⁺ < Al³⁺ < Si⁴⁺ -Which of these give(s) a correct trend in size?

what is the speed of the ejected electron? m_e = 9.11 x 10^-31 kg

What is the electron configuration of Cr³⁺?

In general, Z is less than Z_eff.

In an investigation of the electronic absorption spectrum of a particular element, it is found that a photon having $\lambda$ = 500 nm provides just enough energy to promote an electron from the second quantum level to the third. From this information, we can deduce

Write the electron configuration of Ni²⁺.