Ultraviolet light is incident normally on the surface of a certain substance. The binding energy of the electrons in this substance is 3.29 eV. The incident light has an intensity of 0.044 W/m2. The electrons are photoelectrically emitted with a maximum speed of 5.2x105 m/s. Assume the absorption of every photon ejects an electron. (c) Determine the total energy required to both eject the electron and give it a velocity of 5.2x105 m/s. (e) Determine the number of electrons ejected from 1 cm2 area in 1 s.

Q: Consider the electron of a Li²+ ion that undergoes a transition from a higher energy state n to its…

A: Given ,  ν0=5.464×1014 s-1

Q: In Einstein's photoelectric experiment, the kinetic energy (K.E.) of an electron displaced from a…

A: Concept: The energy of the photon is equal to the sum of the thresold energy and kinetic energy of…

Q: Calculate the kinetic energy of an electron ejected from the surface of a sample of Barium when the…

A: Metals loose electrons easily as they have loosely held electrons. Minimum amount of energy is…

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

A: It states that when a radiation of sufficient frequency strikes a metal surface, ejection of…

Q: The electron microscope uses the wave property of electrons to observe very small objects. A moving…

A: The given wavelength of the electron (λ) = 0.485 nm = 4.85×10-10 m The mass of an electron (m) =…

Q: A student investigating the photoelectric effect attempts to measure the kinetic energy of electrons…

A:

Q: When a metal was exposed to photons at a frequency of 1.19 × 10'5 s-', electrons were emitted with a…

A: You can find the work function of the metal which is the energy required to free the electron from…

Q: function represents the minimum amount of energy to observe ejected electrons via the photoelectric…

A: Given,  Titanium has a work function = 6.94 x 10-19 J. The maximum kinetic energy of ejected…

Q: The net change during photosynthesis involves CO2 and H2O forming glucose (C6H12O6) and O2.…

A: A balanced thermochemical equation for formation of 1.00 mol of glucose has to be given.

Q: Consider the following types of electromagnetic radiation: (1) microwave, (2) ultraviolet, (3) radio…

A: Energy of radiation= h×frequency  frequency= c÷wavelength

Q: Current theories of atomic structure suggest that all matter and all energy demonstrate both…

A: Here, we have to calculate the de Broglie wavelength for: a. an electron moving at 0.91 times the…

Q: Titanium has a work function of 6.94x10^-19 J. The work function represents the minimum amount of…

A: In this question, we want to determine the wavelength of UV light in nanometer unit  You can see…

Q: Suppose that you have a solution containing a substance whose molecules have two quantum states…

A: The population at high energy state is given by:        N = N0 e-ΔE/KT The percentage of molecules…

Q: When we model light (EM radiation) as a particle, we call it a photon -- a packet of energy. How…

A: The concept used in this question is taken from general chemistry.  According to question Light has…

Q: An unknown metal sample is interrogated using a beam of X-rays to liberate electrons which are then…

A: Given that the wavelength of x-rays is 9.54 nm. Kinetic energy of electron is 7.3716 x 10-18 J

Q: A beam produces light at 5.27 * 10^-7 meters. How many photons of light from this beam would be…

A:

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: 5. That's in the visible spectrum! Let's go further and find two more wavelengths emitted by…

A:

Q: A 753 nm krypton laser puts out 4.00 W of power with a beam 4.30 mm in diameter. The beam is pointed…

A:

Q: In Einstein's photoelectric experiment, the kinetic energy (K.E.) of an electron displaced from a…

A: When we energy of Photon to metal then electron which have minimum energy tha is equal to threshold…

Q: 5. The minimum energy needed to break an oxygen-oxygen bond in ozone is 387 kJ/mol. Does a photon…

A:

Q: visible light has a photon energy of 4.263×10−19 J.4.263×10−19 J. Determine its wavelength,…

A: Given that  Energy (E) = 4.263×10-19 J We know that , Energy (E) = hν  where h is the planck's…

Q: None

A:

Q: When a hydrogen atom absorbs a photon of electromagnetic radiation (EMR), the internal energy of the…

A: The energy required to ionize a ground state hydrogen atom is calculated as follows,

Q: In Einstein's photoelectric experiment, the kinetic energy (K.E.) of an electron displaced from a…

A: Given : Threshold energy of lead = 6.81 X 10-19 J Wavelength of light used = 74.7 nm = 74.7 X 10-9 m…

Q: In Einstein's photoelectric experiment, the kinetic energy (K.E.) of an electron displaced from a…

A: Given : Threshold energy of metal, T = 9.04 X 10-19 J And wavelength of light or photon used = 45.5…

Q: ompare the wavelengths of an electron(mass = 9.11×10−31 kg) and a proton(mass = 1.67×10−27 kg), each…

A: The wavelength and momentum (mass × speed) are related to each other as λ = h/mv where h is Planck’s…

Q: The kinetic energy of an electron is 20.5 keV; what is the frequency of this electron? Where 1 eV =…

A: de- Broglie's hypothesis  Any particle which have matter wave also have momentum. Alternatively an…

Q: Express the speed of the electron in the Bohr model in terms of the fundamental constants (me, e, h,…

A: Solution According to Bohr’s theory, velocity of an electron in the nth orbit for hydrogen like…

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

A: Photoelectric effect: A phenomenon in which electrons are ejected from or within a surface when it…

Q: A laser pointer used in the classroom emits light at 4950 Å, at a power of 4.00 mW. (One watt is the…

A: Energy of one photon =hCλWhere , h= Plank's constant                 6.626x10-34J-S            C=…

Q: ectrons:

A:

Q: scenario B, visible light has a frequency of 5.590×1014 s−1.5.590×1014 s−1. Determine its…

A: Frequency (v) = 5.590 × 1014 s-1  Wavelength = ? Energy per photon (E) = ? Color = ?

Q: For potassium (K), the work function equals 3.669 x 10 19 J (per photon). a) What is the minimum…

A:

Q: Using the Bohr model of an electron orbiting a nucleus, the angular momentum of Earth's orbit around…

A: The Bohr quantization condition is,  angular momentum = n h / 2 π Where n is the orbit number  h is…

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.