Question

In: Chemistry

Which of the following electronic transitions are allowed in the hydrogen atom? a.) 2s --> 1s...

Which of the following electronic transitions are allowed in the hydrogen atom?

a.) 2s --> 1s

b.) 2p--> 1s

c.) 3d-->2p

d.) 3s-->5d

e.) 3s--> 5p

Expert Solution

(a) For the hydrogen atom, the selection rule for a transition(whether the transition is allowed or forbidden) are

n = integer, and l = 1.

n and l correspond to the difference in principal quantum numbers and azimuthal quantum numbers. For example - 2s 1s, n = 1-2 = -1(integer) and l corresponding to s-orbital is 0 thus, l = 0 - 0 = 0.

In the above example, l 1, thus the transition is not allowed.

Similarly in (b), 2p 1s, n = 1-2 = -1 and l = 0 - 1 = -1. This follows the selection rules so the transition is allowed.

In (c), 3d 2p, n = 2 - 3 = -1 and l = 1 - 2 = -1. This follows the selection rules so the transition is allowed.

In (d), 3s 5d, n = 5 - 3 = 2 and l = 2 - 0 = 2. This doesn't follow the selection rules so the transition is forbidden.

In (e), 3s 5p, n = 5 - 3 = 2 and l = 1 - 0 = 1. This follows the selection rules so the transition is allowed.

Thus (b), (c), and (e) are the allowed electronic transitions.

queen_honey_blossom answered 3 years ago

Which of the following electronic transitions in a hydrogen atom will be accompanied by the absorption...

Which of the following electronic transitions in a hydrogen atom will be accompanied by the absorption of electromagnetic radiation of the longest wavelength? Group of answer choices A. n = 3 → n = 4 B. n = 6 → n = 5 C. n = 3 → n = 2 D. n = 1 → n = 2 E. n = 4 → n = 5

For the 1S to 2P (Lyman α) transitions in the hydrogen atom, calculate the total integrated...

For the 1S to 2P (Lyman α) transitions in the hydrogen atom, calculate the total integrated absorption cross section.

Which of the following transitions in the Bohr hydrogen atom results in the emission of the...

Which of the following transitions in the Bohr hydrogen atom results in the emission of the shortest wavelength photon. a. n = 2 → n = 5 b. n = 5 → n = 2 c. n = 6 → n = 3 d. n = 3 → n = 6 e. n = 4 → n = 1

The Balmer series for the hydrogen atom corresponds to electronic transitions that terminate in the state...

The Balmer series for the hydrogen atom corresponds to electronic transitions that terminate in the state with quantum number n = 2 as shown in the figure below. Consider the photon of longest wavelength corresponding to a transition shown in the figure. (a) Determine its energy (b) Determine its wavelength Consider the spectral line of shortest wavelength corresponding to a transition shown in the figure (c) Find its photon energy (d) Find its wavelength (e) What is the shortest possible wavelength in the Balmer series?

(A) Indicate the selection rules for atomic electronic transitions and the transitions allowed between the electronic...

(A) Indicate the selection rules for atomic electronic transitions and the transitions allowed between the electronic levels 2S1/2, 2P1/2 and 2P3/2 (B) Indicate if the processes of induced emission and spontaneous emission are resonant processes.

The following is a diagram of energy states and transitions in the hydrogen atom.

The following is a diagram of energy states and transitions in the hydrogen atom.Match each of the responses below with the correct arrow from the figure. 1.) The emission line with the shortest wavelength. 2.) The absorption line with the longest wavelength. 3.) The emission line with the highest energy. 4.) The absorption line with the lowest energy. 5.) The emission line with the highest frequency. 6.) The line corresponding to the ionization energy of hydrogen.

Consider the three electronic transitions in a hydrogen atom shown here, labeled A, B, and C....

Consider the three electronic transitions in a hydrogen atom shown here, labeled A, B, and C. (a) Three electromagnetic waves, all drawn on the same scale, are also shown. Each corresponds to one of the transitions. Which electromagnetic wave (i), (ii), or (iii), is associated with electronic transition C?(b) Calculate the energy of the photon emitted for each transition.(c) Calculate the wavelength of the photon emitted for each transition. Do any of these transitions lead to the emission of visible light?...

If an atom has completed orbitals 1s, 2s and 2p, how manyelectrons in total are...

If an atom has completed orbitals 1s, 2s and 2p, how many electrons in total are there and which element would it be?Question 6 options:6 electrons : Carbon8 electrons : Oxygen9 electrons : Fluorine10 electrons : Neon

Without doing detailed calculations, indicate which of the following electron transitions in the hydrogen atom results...

Without doing detailed calculations, indicate which of the following electron transitions in the hydrogen atom results in the emission of light of the longest wavelength. Explain why. a. from n = 1 to n = 2 b. from n = 4 to n = 3 c. from n = 1 to n = 6 d. from n = 3 to n = 2

Determine the radius at which a 2s electron in a hydrogen-like atom of atomic number Z...

Determine the radius at which a 2s electron in a hydrogen-like atom of atomic number Z is more likely to be found? The answer is r = 5.24(a0/z) OR r = 5.24(a/z) with no units provided, but they should be there.