Question 1

An atom has completely filled inner shells and a single valence electron in an excited p state.The filled inner shells have an orbital momentum equal to zero.A magnetic field is applied,defining the z-axis along the field.Which of the following sets of angles are possible angles between the magnetic field and the orbital angular momentum?

Accepted Answer

The orbital angular momentum of an electron in a p state can take on orientations that correspond to the magnetic quantum numbers m_l = -1, 0, +1. These correspond to angles of 90°, and the combination of 45° and 135° with respect to the z-axis when a magnetic field is applied. This is because the projection of the angular momentum vector on the z-axis can have three values, leading to these possible angles for its orientation.

Question 2

The magnitude of the orbital angular momentum L of an electron in a certain atom is equal to 3.464ħ.Which of the following angles could NOT be the angle between the orbital angular momentum vector of the electron and an arbitrary z-direction?

Accepted Answer

The answer of The magnitude of the orbital angular momentum...

Question 3

The only VALID electron state and shell designation among the following is

Accepted Answer

The correct electron state and shell designation is 2p, L. The principal quantum number (n) indicates the shell (n=1 is K, n=2 is L, etc.), and the azimuthal quantum number (l) indicates the subshell (s, p, d, f for l=0, 1, 2, 3, respectively). For option D, n=2 corresponds to the L shell, and p (l=1) is a valid subshell for n=2.

Question 4

What is the greatest magnitude of the orbital angular momentum L for an electron in a state with principal quantum number n=5?

Accepted Answer

The answer of What is the greatest magnitude of the...

Question 5

What is the electron configuration for ground state Li,which has 3 electrons?

Accepted Answer

The electron configuration for ground state Li is 1s2 2s1. This can be written as 1sS1U1P1 2S1S1P0 2sS1U1P1. The correct option is C, which has the correct subshells in the correct order: 1sS1U1P1 2S1S1P0 2sS1U1P1.

Question 6

A neutral atom has an electron configuration of 1s²2s²2p⁶3s²3p².How many protons does it have in its nucleus?

Accepted Answer

To determine the number of protons in the nucleus of the atom, we need to look at the atomic number, which is equal to the number of protons. The electron configuration given in the problem indicates that the atom has 14 electrons, filling up to the 3p subshell. This means that the atom is in the 3rd period of the periodic table. The atomic number of the element in the 3rd period is equal to the number of electrons in the valence shell, which is the 3s and 3p subshells. Therefore, the atomic number, and the number of protons in the nucleus, is 14.

Question 7

Consider the n = 9 shell.
(a)What is the largest value of the orbital quantum number,l,in this shell?
(b)How many electrons can be placed in this shell?

Accepted Answer

The answer of Consider the n = 9 shell.
(a)What is...

Question 8

What is the correct electronic configuration for ground state carbon,which has 6 electrons?

Accepted Answer

The ground state electronic configuration for carbon, which has 6 electrons, is 1s² 2s² 2p².

Question 9

The only INVALID electron state and shell designation among the following is

Accepted Answer

The designation 2d is invalid because d orbitals do not exist in the second shell. The valid orbitals in the second shell are s and p, so the correct designation for the state with two electrons in the second shell would be 2s or 2p, not 2d.

Question 10

What is the minimum speed needed by a ground-state hydrogen atom for its kinetic energy to be enough to ionize the atom in a collision? (1 eV = 1.60 × 10^-19 J, m_H≈ m_proton =1.67 x 10^-27kg)

Accepted Answer

The answer of What is the minimum speed needed by...

Question 11

What is the greatest total angular momentum J for an electron in the n = 2 shell?

Accepted Answer

The answer of What is the greatest total angular momentum...

Question 12

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

Accepted Answer

The answer of How many electrons can be found with...

Question 13

The magnitude of the orbital angular momentum L of an electron in a certain atom is equal to 3.464ħ.What is the orbital quantum number l of the electron?

Accepted Answer

The magnitude of the orbital angular momentum L is given by the formula L = √(l(l+1))ħ. Given L = 3.464ħ, we solve for l: √(l(l+1)) = 3.464. Squaring both sides gives l(l+1) = 12. Using trial and error or solving the quadratic equation, l = 3 satisfies this equation.

Question 14

The normalized wave function for a hydrogen atom in the 1s state is given by where α₀is the Bohr radius,which is equal to 5.29 × 10^-11 m.What is the probability of finding the electron at a distance greater than 7.8 α₀ from the proton?

Accepted Answer

The answer of The normalized wave function for a hydrogen...

Question 15

How many electrons does it take to fill the d subshell?

Accepted Answer

The d subshell can hold a maximum of 10 electrons. This is because there are five d orbitals with a maximum capacity of 2 electrons each. Therefore, it takes 10 electrons to fill the d subshell.

Question 16

How many possible sets of quantum numbers (electron states)are there in the 5f subshell?

Accepted Answer

The 5f subshell can hold a total of 14 electrons, which means there are 14 possible sets of quantum numbers. This is because each orbital can hold 2 electrons (with opposite spins), and the f subshell has 7 orbitals (7 orbitals x 2 electrons/orbital = 14 electrons/states).

Question 17

An atom with 5 electrons is in its ground state.How many electrons are in its outermost shell?

Accepted Answer

The answer of An atom with 5 electrons is in...

Question 18

The magnitude of the orbital angular momentum L of an electron in a certain atom is equal to 3.464ħ.Which one of the following numbers could be the principal quantum number n of the electron?

Accepted Answer

The answer of The magnitude of the orbital angular momentum...

Question 19

The correct ground state electron configuration of boron,which has 5 electrons,is

Accepted Answer

The correct ground state electron configuration for boron, which has 5 electrons, is represented by option A, which translates to "1s^2 2s^2 2p^1" in conventional notation. This configuration shows that boron has two electrons in the 1s orbital, two in the 2s orbital, and one in the 2p orbital, totaling five electrons.

Question 20

An atom has completely filled inner shells and a single valence electron in an excited p state.The filled inner shells have an orbital momentum equal to zero.What is the magnitude of the orbital angular momentum L of the atom?

Accepted Answer

The answer of An atom has completely filled inner shells...

Quiz 41: Atomic Structure

The magnitude of the orbital angular momentum L of an electron in a certain atom is equal to 3.464ħ.Which of the following angles could NOT be the angle between the orbital angular momentum vector of the electron and an arbitrary z-direction?

The only VALID electron state and shell designation among the following is

What is the greatest magnitude of the orbital angular momentum L for an electron in a state with principal quantum number n=5?

What is the electron configuration for ground state Li,which has 3 electrons?

A neutral atom has an electron configuration of 1s²2s²2p⁶3s²3p².How many protons does it have in its nucleus?

Consider the n = 9 shell. (a)What is the largest value of the orbital quantum number,l,in this shell? (b)How many electrons can be placed in this shell?

What is the correct electronic configuration for ground state carbon,which has 6 electrons?

The only INVALID electron state and shell designation among the following is

What is the minimum speed needed by a ground-state hydrogen atom for its kinetic energy to be enough to ionize the atom in a collision? (1 eV = 1.60 × 10^-19 J, m_H≈ m_proton =1.67 x 10^-27kg)

What is the greatest total angular momentum J for an electron in the n = 2 shell?

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

The magnitude of the orbital angular momentum L of an electron in a certain atom is equal to 3.464ħ.What is the orbital quantum number l of the electron?

The normalized wave function for a hydrogen atom in the 1s state is given by where α₀is the Bohr radius,which is equal to 5.29 × 10^-11 m.What is the probability of finding the electron at a distance greater than 7.8 α₀ from the proton?

How many electrons does it take to fill the d subshell?

How many possible sets of quantum numbers (electron states) are there in the 5f subshell?

An atom with 5 electrons is in its ground state.How many electrons are in its outermost shell?

The magnitude of the orbital angular momentum L of an electron in a certain atom is equal to 3.464ħ.Which one of the following numbers could be the principal quantum number n of the electron?

The correct ground state electron configuration of boron,which has 5 electrons,is

An atom has completely filled inner shells and a single valence electron in an excited p state.The filled inner shells have an orbital momentum equal to zero.What is the magnitude of the orbital angular momentum L of the atom?

Quiz 41: Atomic Structure

The magnitude of the orbital angular momentum L of an electron in a certain atom is equal to 3.464ħ.Which of the following angles could NOT be the angle between the orbital angular momentum vector of the electron and an arbitrary z-direction?

The only VALID electron state and shell designation among the following is

What is the greatest magnitude of the orbital angular momentum L for an electron in a state with principal quantum number n=5?

What is the electron configuration for ground state Li,which has 3 electrons?

A neutral atom has an electron configuration of 1s22s22p63s23p2.How many protons does it have in its nucleus?

Consider the n = 9 shell. (a)What is the largest value of the orbital quantum number,l,in this shell? (b)How many electrons can be placed in this shell?

What is the correct electronic configuration for ground state carbon,which has 6 electrons?

The only INVALID electron state and shell designation among the following is

What is the minimum speed needed by a ground-state hydrogen atom for its kinetic energy to be enough to ionize the atom in a collision? (1 eV = 1.60 × 10-19 J, mH≈ mproton =1.67 x 10-27 kg)

What is the greatest total angular momentum J for an electron in the n = 2 shell?

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

The magnitude of the orbital angular momentum L of an electron in a certain atom is equal to 3.464ħ.What is the orbital quantum number l of the electron?

The normalized wave function for a hydrogen atom in the 1s state is given by where α0 is the Bohr radius,which is equal to 5.29 × 10-11 m.What is the probability of finding the electron at a distance greater than 7.8 α0 from the proton?

How many electrons does it take to fill the d subshell?

How many possible sets of quantum numbers (electron states) are there in the 5f subshell?

An atom with 5 electrons is in its ground state.How many electrons are in its outermost shell?

The magnitude of the orbital angular momentum L of an electron in a certain atom is equal to 3.464ħ.Which one of the following numbers could be the principal quantum number n of the electron?

The correct ground state electron configuration of boron,which has 5 electrons,is

An atom has completely filled inner shells and a single valence electron in an excited p state.The filled inner shells have an orbital momentum equal to zero.What is the magnitude of the orbital angular momentum L of the atom?

A neutral atom has an electron configuration of 1s²2s²2p⁶3s²3p².How many protons does it have in its nucleus?

What is the minimum speed needed by a ground-state hydrogen atom for its kinetic energy to be enough to ionize the atom in a collision? (1 eV = 1.60 × 10^-19 J, m_H≈ m_proton =1.67 x 10^-27kg)

The normalized wave function for a hydrogen atom in the 1s state is given by where α₀is the Bohr radius,which is equal to 5.29 × 10^-11 m.What is the probability of finding the electron at a distance greater than 7.8 α₀ from the proton?