A certain metal has a work function of 195.0 kJ per mole of e_. What wavelength of electromagnetic radiation (in nm) must be directed at the surface in order for electrons to be ejected with a de Broglie wavelength of 10.53 angstroms (Å) 1 Å = 1×10-10meters

Q: Wave length (nanometers) 2.115 E-12 Joules ?

A: Given, energy = 2.115×10-12 J We have to calculate the wave length in nanometers.

Q: Calculate the deBroglie wavelength (in pm) of a UF6(g) molecule with a velocity of 766 m/s. (molar…

A:

Q: The metal, when a metal was exposed to light at a frequency of 7.08 x 1015 51, electrons were…

A:

Q: A certain metal has a work function of 315.0 kJ per mole of e-. What wavelength of electromagnetic…

A: The Kinetic energy of the ejected electrons is- K.E. =12mV2=hv-ϕ…

Q: The first ionization energy of a sodium atom is 0.830 aJ (attojoules). What is the frequency and…

A: Answer: When photons are bombarded on the sodium atoms, they will collide with the electrons of it…

Q: Calculate the de Broglie wavelength of a moving electron with kinetic energy equal to 17.77 electron…

A: De Broglie gave an equation showing the relation of mass and velocity of a particle with its wave…

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: Heat of fusion of ice is 6.00 kJ/mol. Find the number of photons of wavelength= 6.25x10^-6 m that…

A: The amount of heat required can be calculated as follows:

Q: A) Calculate the maximum wavelength,λmax, of electromagnetic radiation that could eject electrons…

A: Q-A) Calculate the maximum wavelength,λmax, of electromagnetic radiation that could eject electrons…

Q: A minimum of 352.3 kJ/mol is required to remove an electron from a(n) uranium metal surface. What is…

A: Given data, Energy to remove an electron = 352.3 kJ/mol We know, 1 mole = 6.022 x 1023 electrons…

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

A: Details

Q: A ground state hydrogen atom absorbs a photon of light having a wavelength of 94.92 nm. It then…

A:

Q: Which of the following combinations of quantum numbers is permissible? A)n = 1, l = 2, ml = 0, ms =…

A: For a given principal quantum number n ,  l values : 0 to (n-1)  ml values : -l to +l  ms values :…

Q: What is the velocity of the electrons from potassium?

A: Photoelectric effect : Ejection of electrons from metal surface when a suitable light fall on it…

Q: Light with a wavelength of 97.3 nm is absorbed by an electron in the n = 1 level. To what level is…

A:

Q: diffraction instrument wherein the detector screen is positioned exactly 0.25 m away from a crystal…

A: First dark spot = 3.15 cm Distance from crystal to detector = 0.25 m

Q: How fast must a 148 g baseball travel in order to have a de Broglie wavelength that is equal to that…

A: de-Broglie wavelength(L) = 100 pm 1 pm = 10-12 m So, L = 100×10-12 = 10-10 m Mass(m) = 148 g = 0.148…

Q: What is the de Broglie wavelength of an electron traveling at 3.26% of the speed of light?  (c  =…

A: Given, Note: mass of electron (me) should be in kg not  in J.

Q: Most of the light from a sodium lamp has a wavelength of 589 nm. What is the v of this radiation?…

A: Speed of light, C = 3 × 108 m/s Wavelength of light (λ) = 589nm  Wavelength of light (λ) = 589×10-9…

Q: Calculate the de Broglie wavelength of a 143 g baseball travelling at 42 m s−1. Why is the wave…

A: Wavelength can be calculated using the given equation: λ  =  hmvh isthe Plancks constantm is the…

Q: What is the wavelength λ of the photon that has been released in Part B? ΔE =  −2.04×10−18 J…

A: The relation between energy and wavelength of a radiation is given by Planck-Einstein’s relation,…

Q: If an atom of neon-20 were moving at its root mean square velocity at 255°C, what would the de…

A: Root mean square velocity=3RTMGwhere ,         R=Universal gas constant         T=Temperature in…

Q: A certain metal has a work function of 233.0 kJ per mole of e_. What wavelength of electromagnetic…

A: Given : work function of metal = 233.0 KJ/mole of e-  And de Broglie wavelength of electron = 14.18…

Q: Calculate the de Broglie wavelength of a moving electron with kinetic energy equal to 6.396 electron…

A: K.E = 6.396 eV 1 eV = 1.602 × 10-19 J K.E = =6.396 × 1.602 × 10-19 J=10.2475× 10-19 J

Q: If the energy released by an electron making a transition from one hydrogen atom orbit to another is…

A: Given, Energy (E) = 3.02 × 10−19 J Wavelength (λ) = ? Note: planck constant (h) = 6.626 × 10-34 J.s…

Q: What is the velocity of the electrons from sodium?

A: Here given ϕ=4.41×10-19 J of sodium. we have to calculate velocity of ejected electron-

Q: An electron microscope employs a beam of electrons to obtain an image of an object (you can see…

A: Using de-Broglie equation, λ=hm vλ=wavelengthh=Planck's constantm=massv=velocity   In terms of…

Q: The blue solution formed when an alka li metal dissolves in liquid ammonia consists of the metal…

A:

Q: 1. Apply the Pauli exclusion principle to determine the number of electrons that could occupy the…

A: as per Q&A guidelines of portal I solve first question, because it comes under multiple question…

Q: 00 THz frequency) illuminate two metal surfaces, A nd B. Electrons with kinetic energy, 0.65 ×1019…

A: When a Photon of energy E strikes the metal surface and it's energy is greater than the threshold…

Q: The energy difference between the 3p and 3s orbitals is 2.107 eV. Calculate the wavelength of…

A: The objective of this question is to calculate the wavelength of radiation that would be absorbed to…

Q: greater vel ocity? What is the velocity of the electrons? 4. Titanium ( 6.94 X 1019 J) 10 and…

A: As per our honor code we are authorized only one question at once. We’ll answer the first question…

Q: An electron was ejected from a sodium metal surface with 6.8 x 10¹⁴ s⁻¹ radiation. What is the…

A: The given work function ( Wo ) = 2.50 x 10-19 J The formula which is used to determine work function…

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: A minimum of 221.9 kJ/mol is required to remove an electron from a(n) potassium metal surface. What…

A:

Q: When electromagnetic radiation with a wavelength of 375.0 nm is directed at the surface of a certain…

A: Answer:- This question is answered by using the simple concept of photoelectric effect in which…

Q: Which of the following set of quantum numbers would not be allowed? n = 3, l = 2, ml =1 n = 3, l =…

A:

Q: A visible (blue) emission spectral line for chromium (Cr) occurs at wavelength λ = 489.677 nm. What…

A: Given: wavelength= 489.677 nm=489.677×10-9 m To find: Frequency (ν)

Q: A single pulse of a laser yields an average of 8.17 × 1016 photons with λ = 501 nm. If melting ice…

A: Given, A single pulse of a laser yields an average of 8.17 × 1016 photons.Wavelength, Melting ice to…

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.