Calculate the threshold energy in kJ/mol of electrons in aluminum, given that the lowest frequency photon for which the photoelectric effect is observed is 9.87 × 1014 Hz.

Q: 1. The work function or the energy needed to eject an electron in cesium metal is 3.42 x 10-19 J. If…

A:

Q: An He1+ ion absorbs a photon with a frequency of 2.53 x 1018 Hz. If the energy of the final state is…

A: Frequency of photon = 2.53×1018 HzEnergy of final state (Ef) = 4.35×10-15 J

Q: (8.3)Which of the following transitions (in a hydrogen atom) represent emission of the photon with…

A: Electronic transition is the jumping of an electron from the ground state to the excited state or…

Q: Calculate the energy (in joules) of a photon with a wavelength of 5.00 × 10° nm

A: Answer Energy of a photon = 3.9756*10-20 J

Q: Hydrogen atoms absorb energy so that the electrons are excited to the energy level n = 7. Electrons…

A: Given information:The transitions of an electron are taking place from n = 7.

Q: A photon has an energy of 2.93 × 1 0 -25 J. What is its frequency? What type of electromagnetic…

A: The energy of a photon is related with the frequency of the photon as follows: E=hν Where E is the…

Q: What is the energy of a photon with a frequency of 1.22 x 1015 Hz?

A: To calculate energy of a photon:

Q: Calculate the energy in joules of a photon of electromagnetic radiation whose frequency is 2.93x1014…

A: Given : Frequency of photon = 2.93 X 1014 s-1

Q: Calculate the energy of the green light emitted, per photon, by a mercury lamp with a frequency of…

A: Given data Frequency of mercury lamp = 5.49 × 1014 Hz We have to calculate the energy of the green…

Q: What is the wavelength of electromagnetic radiation with a frequency of 5.00 × 1 0 12 Hz? What kind…

A: The product of frequency and wavelength of the wave is equal to the speed of light. Write the…

Q: Calculate the energy (in joules) of a photon with a wavelength of 5.00 x 104 nm.

A:

Q: When light with a wavelength of 184 nm strikes the surface of tin metal, electrons are ejected with…

A:

Q: When light of frequency 1.30x 1015 s1 shines on the surface of cesium metal, electrons are ejected…

A:

Q: A photon has a frequency of 5.6 x 108 Hz. What is the energy of this photon?

A: Frequency of photon = 5.6 × 108 Hz   Energy of the photon = ?

Q: How much energy is does a photon with a frequency of 525 x 10^14 Hz contain?

A: We have to determine energy required by photon with frequency of 525x1014 Hz

Q: A photon has a frequency of 8.63 x 108 Hz. What is the energy of this photon in Joules? (h = 6.626 x…

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Q: How much energy (in kJ) do 3.0 moles of photons, all with a wavelength of 655 nm, contain?

A: The relation between energy and no. of photons asgiven byEnergy E=NA*hνE=NA*h*cλν=frequency of…

Q: It takes 254 kJ/mol to eject electrons from a certain metal surface. What is the longest wavelength…

A: Given: Energy = 254 kJ/mol h = 6.626×10-34 J.s

Q: A metal alloy of unknown composition was bombarded with 204 nm photons to determine its…

A: The velocity of the photo ejected electron = 6.00 ×105 m/s. The wavelength of the ejected electron…

Q: What is the energy of a mole of X-ray photons that has a wavelength of 6.17 x 10-7 m?

A:

Q: Excited hydrogen atoms emit light in the ultraviolet at 2.47 ´ 1015 Hz. What is the energy of a…

A: The energy of photon is given by  E = hf where E = energy of photon  h = Plank's constant = 6.626 X…

Q: Green light can have energy of 3.88 x 10^-19 J. Calculate the wavelength of this light.

A: Energy of the electron is the product of Plank's constant and frequency. One mole of electrons…

Q: What is the energy in joules of a photon with a wavelength of 610 nm?

A:

Q: Careful spectral analysis shows that the familiar yellow light of sodium lamps (such as street…

A: Given : The wavelength of photon 1 = 589.0 nm = 589.0 X 10-9 m                  (Since 1 nm = 10-9…

Q: Calculate the wavelength of light emitted when an electron in a hydrogen atom makes a transition…

A:

Q: The threshold energy to remove an electron from potassium is 3.69 x 10-19 J.  Will an electron be…

A:

Q: What is the energy of a photon corresponding to radio waves of frequency 1.166 x 10° /s? Energy = J…

A:

Q: If a laser with a wavelength of 450 nm emits total 7.25 x 10" photons over a given time period, what…

A:

Q: When a compound containing sodium ions is heated in a Bunsen burner flame, photons with an energy of…

A: Wavelength can be defined as the distance between corresponding points of two consecutive waves.It…

Q: In Einstein's photoelectric experiment, the kinetic energy of an electron displaced from a metal by…

A: According to Einstein's photo electric effect  E= hcλ=wo+ KE  E= Energy of incident light  h= planks…

Q: A hydrogen atom in the ground state absorbs a photon of wavelength 95.0 nm. What energy level does…

A: The Rydberg equation is given below.

Q: Calculate energy of a photon having the frequency of 1.68 x1015 1/s

A:

Q: The threshold frequency for magnesium is 8.84 x 1014 Hz.  If magnesium metal is exposed to a light…

A:

Q: When light of frequency 1.30x 1015 s-1 shines on the surface of cesium metal, electrons are ejected…

A: Electromagnetic spectrum involves different radiations from the lowest to the highest frequency…

Q: An electron in the hydrogen atom makes a transition from an energy state of principal quantum number…

A: Answer:- This question is answered by using the calculation of shell number from which emission is…

Q: a. Calculate the frequency of the light emitted when an electron in a hydrogen atom makes each of…

A: The energy emitted from n = 4 to n = 3 is calculated as

Q: The binding energy of electrons to chromium metal is 7.21x 10-19 J. What is the longest wavelength…

A: Electromagnetic spectrum involves different radiations from the lowest to the highest frequency…

Q: What is the energy of the photon emitted when an electron in a hydrogen atom transitions from the…

A: Given:nf = 6ni = 2Z = 1 (Hydrogen atom)

Q: What is the wavelength (in meters and in nanometers) of electromagnetic radiation whose energy per…

A:

Q: What is the binding energy of an electron in a photosensitive metal (in kJ/mol) if the longest…

A: Answer:

Q: What is the frequency of a photon with 1.594 x 10^-24 J of energy?

A: The relationship between frequency and energy of photon is given by  E = hv E = Energy h = Planks…

Q: Calculate the maximum wavelength, 2max, of electromagnetic radiation that could eject electrons from…

A: Work function is defined as the minimum energy required to  eject an electron from the metal…

Q: What is the wavelength in NANOmeters of light that has an energy per photon of 5.36 x 10^19 J?

A:

Q: A Li2+ ion absorbs a photon with a frequency of 6.66 x 10^14 Hz. If the energy of the final state of…

A: Energy difference between two states is determined using Planck’s equation as follows:

Q: How much energy (in Joules) is associated with a de Brogile wavelength of 6.80 x 10-7 meters?

A: The relationship between the energy and wavelength is given by  where E = energy  h = Plank's…

Q: How much energy, in J, is associated with a pulse of light containing 4.1 x 1019 photons with a…

A: The wavelength of the pulse is  415 × 10-9 m. No. Of photons = 4.1 × 1019. By calculating the energy…

Q: The scattering of sunlight by the mixture of gas molecules in air results in the blue color of the…

A: Photon is the package of light. Energy of photon is determine by using formula. E=hcλE=hv.E is…

Q: How much energy (in kJ) do 3.0 moles of photons, all with a wavelength of 680. nm, contain?

A: According to Planck's quantum equation is  One photon energy (E) is equal to           E = hν E =…

Q: Calculate the energy of a photon of frequency 6.75×10^12 s^-1

A: Given: Frequency of photon =  6.75×1012 s-1 To find: Energy of a photon?

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.