An atom can be excited   a. if it emits a photon.   b. if it collides with another atom or electron.   c. if it absorbs a photon.   d. if a and b occur.   e. if b and c occur.

Q: What does the angular-momentum quantum number, l, describe? answer choices:  a. The clockwise or…

A: we have to select the correct statement for orbital momentum quantum number

Q: When atomic electrons are excited to a higher level, they always return to their lowest energy level…

A: When an electron is excited from ground state to higher excited state then they always return to the…

Q: Visible light contains colors from red to violet.a. What color of light has the shortest…

A: When light has considered wave nature, then there are many lights present based on their frequency…

Q: What do you call a group of atoms with similar magnetic orientations? A. magnetic domain B.…

A: a group of atoms with similar magnetic orientations is called as

Q: 1. Which one of the following types of radiation has the shortest wavelength, the greatest energy,…

A:

Q: Determine the energy of 1.40 molmol of photons for each of the following kinds of light. (Assume…

A: The energy of a photon can be given by : E = hc / λ Here h is Planck's constant = 6.63 x 10-34…

Q: Light wave A has a greater frequency than light wave B. Which has a greater wavelength? a. Wave A…

A: The wavelength of light is inversely related to the frequency of light. The frequency and wavelength…

Q: Which of the following atoms have only two unpaired electrons? Justify your answer a. C b. Ca c. Ni…

A: (a)The atomic number of carbon is 6. The electronic configuration of carbon is 1s22s22p2. This shows…

Q: Identify the photon in each pair with the greater energy.a. green light or yellow  lightb. red light…

A: Frequency of a light is directly proportional to the energy of photon while wavelength of radiation…

Q: why

A: The relationship between wavelength and energy is given as:

Q: What is the total energy (in kJ) of 1.0 mol of photons with a frequency of 2.75 × 1014 Hz? A. 182…

A: We know that energy of one photon is : E = hνwhere E = energy h = plank constantν = frequency…

Q: Define the following terms.a. frequency c. quantumb. wavelength d. ground state

A: To define the terms: a. frequency  b. wavelength c. quantum d. ground state

Q: If the photoelectric effect is observed when using blue light but not red light, the threshold…

A: The ejection of electrons in the photoelectric effect is directly proportional to the energy of the…

Q: It is the number of waves that pass-through a given point in each second is called what? Select…

A: is the number of waves that pass-through a given point in each second is called what?

Q: energy would be emitted from which of the following electron transitions  a. 4p to 3s  b. 3p to 3d…

A:

Q: Which of the following statements is incorrect? a. as the energy of a photon increases, its…

A: According to Planck's equation, the relation between the energy of a photon and it’s wavelength is…

Q: An electron absorbs a single photon with a wavelength = 494 nm. Calculate the frequency of the…

A: Given data is as follows: The wavelength of the photon = 494 nm = 494×10-9 m The frequency of the…

Q: An object was radiating light at a frequency of 2.947 x 1014 Hz. The total energy emitted per second…

A: The expression for the energy of photon is shown below: E = nhν where; E = energy of photon n =…

Q: What is an energy level? Explain the difference between ground state and excited state.

A: To define : Energy level, ground state and excited state.

Q: List these types of electromagnetic radiation in order of(i) increasing frequency and (ii)…

A: (i) increasing frequency and (ii) decreasing energy per photon:a. gamma rays b. radio wavesc.…

Q: Answer all of this please.  Give the orbital notation if the last main energy level and the quantum…

A: Electronic configuration (E.C.) of Rubidium (Rb): [Kr]5s1 For 5s1: principal n=5Azimuthal/angular…

Q: Question 25 When an electron absorbs a photon it moves to a when it releases a photon it moves to a…

A:

Q: which of the following is true? I) Atomic emission spectra are a series of discrete lines. II)…

A: Answer  True statements about the following  I) Atomic…

Q: Which of the following forms of electromagnetic radiation have the highest frequency?  a.Radio…

A:

Q: Determine the energy of 1.70 mol of photons for each of the following kinds of light. (Assume three…

A: Given :-  A. infrared radiation (1440 nm ) B. visible light (480 nm) C. ultraviolet radiation (160…

Q: light A. How is the wavelength of a photon related to its equency?

A: In this question, we will discuss about how wavelength is related to frequency for a photon.  You…

Q: When an atom in an excited state changes to the ground state it:   a. releases energy   b. gains…

A: When an atom in an excited state changes to the ground state it:

Q: One nanometer is  a. Larger than the wavelength of visible light b. Around the same size as the…

A: Explanation to the correct answer is given below

Q: How are the Bohr model and the quantum mechanical model of the hydrogen atom similar?   A. Both…

A: The comparison of the Bohr model and the quantum mechanical model of the hydrogen atom is given…

Q: 22. The total energy of a nitrogen gas laser pulse with a wavelength of 337 nm is 3.87 millijoules.…

A: a)energy of a photon = hcλ let the number of photons be x. so, E = x . hcλ 3.87×10-3 =…

Q: What is an emission line spectrum?     A.a visual representation of the range of energy emitted by…

A: The spectra that deal with a chemical molecule are of two types: Absorption spectrum and emission…

Q: For the photons with the following wavelengths, which of the photons possesses the least energy and…

A: The energy of a photon of electromagnetic radiation depends on the frequency of the photon.…

Q: Which wavelength of light has the highest frequency? a. 16 mm b. 4 nm c. 16 nm d. 4 mm

A:

Q: Determine the energy of 1.30  mol of photons for each of the following kinds of light. (Assume three…

A: Given -> Mole of photons = 1.30 mole  Energy of one photon = hc/wavelength

Q: In a photoelectric effect experiment, blue light shining on a metal surface caused photoelectrons to…

A: The photoelectric effect is a phenomenon in physics where electrons are emitted from a metal surface…

Q: What is the energy of a photon of red light that has a wavelength of 656 nm?   a. 2.03 x 10-19 J B.…

A:

Q: Which of the following electromagnetic waves is used to probe the crystalline sctructure of matter?…

A:

Q: Radiation does not only behave as wave as indicated by: a. The shorter wavelength radiation seen in…

A: The Compton effect generally infers to the phenomenon by which the energy of photon decreases when…

Q: Consider an electronic transition that originates at hydrogens ninth orbit and terminates at the…

A: When an electronic transition that originates at hydrogen's ninth orbit and terminates at the fourth…

Q: Any consumer sample of interest for the wavelength studied  a. absorbed in the blue region, so it…

A: The color of a compound is the complementary color of the absorbed color by the compound.

Q: What was the initial energy level of an electron if it emitted a photon of wavelength 0.103µm after…

A: Initial energy level of an electron can be determined using Rydberg equation as follows,

Q: Note the major accomplishments of the following A. Chadwick B. deBroglie C. Geiger D. Bohr E.…

A: Chadwick made a fundamental discovery in the domain of nuclear science: he proved the existence of…

Q: This is from a study guide for a final, not a graded assignment.

A: According to Einstein's theory, the photoelectric current increases as the intensity of incident…

Q: a.) Write the ground-state electron configuration for calcium, Ca. You may write either the full or…

A: Atomic Number Ca : 20  Cl : 17

Q: The photoelectric effect was explained by Albert Einstein by assuming that: a. Light is a particle…

A: Radiant energy is emmited or absorbed discontinuously in the form of small energy bundles or energy…

Quantum Chemistry

Quantum chemistry deals with the properties of chemical systems and their reactions. The branch of chemistry which is more concerned with quantum chemistry is physical chemistry. It is a more sophisticated field of theoretical physics which is concerned towards the application of physical concepts towards various chemical aspects such as, formation of atoms, chemical structure descriptions, chemical bond strength, hybridization, conjugation etc. Quantum chemistry mainly studies the various states i.e., ground state, excited state, transition states of the individual atoms or molecules taking place during any chemical reaction. The laws of motion explained by various scientists, which are termed as “classical mechanics” were not acceptable in terms of electrons, protons, atoms, light etc. Thus, a new theory named “quantum mechanics” emerged to understand the basic framework of various atomic and subatomic particles.