It takes 208.4 kJ of energy to remove 1 mole of electrons from an atom on the surface of rubidium metal. How much e...
It takes 497 kJ to remove one mole of electrons from the atoms at the surface of a solid metal. What is the maximum wavelength of light capable of doing this?
9. (15 points) Electrons are emitted from the surface of a metal when it's exposed to light. This is called the photoclectric effect. Each metal has a certain threshold frequency of light, below which nothing happens. Right at this threshold frequency, an electron is emitted. The binding energy of a metal is the minimum amount of energy required to remove an electron from the surface of the metal. The binding energy for lithium metal is 279.7 kJ/mol (that is, it...
The energy required to remove an electron from a surface of a solid element is called its work function. If a minimum of 360.9 kJ/mol is required to remove electrons from Al atoms on a surface of a sample of aluminum, what is the maximum wavelength (max) of light that can remove an electron from an Al atom on this surface?
17. It takes 254 kJ/mol to eject electrons from a certain metal surface. What is the longest wavelength of light (nm) that can be used to eject electrons from the surface of this metal via the photoelectric effect 18. Why does this question ask you about the 'longest wavelength of radiation, rather than the 'shortest'? 19. When radiation of wavelength 2.45 x 10'm falls on a metal surface, the maximum kinetic energy of the emitted electrons is found to be...
- Why does it take energy to remove an electron from a metal surface? - Why are no electrons emitted from the surface of a metal if the frequency of light is below a threshold value? - How does application of the conservation of energy explain the dependence of electron kinetic energy upon the frequency of light shone on the metal surface. The subject is Physical CHEM ; Quantum mechanics
The maximum wavelength of electromagnetic radiation capable of removing an electron from the surface of a certain metal is 421.2 nm. Use this information to determine the work function for the metal in kJ per mole of electrons ejected.
The photoelectric work function for barium metal is 239 kilojoules per mole of electrons ejected from the surface. Calculate the maximum wavelength of electromagnetic radiation capable of removing an electron from the surface of barium metal. Amax = nm (Answer in nanometers) Check
A metal surface has a minimum binding energy of 2.34x10-19 J/electron. An incident light of 345 nm wavelength was directed onto the metal. Answer the following questions: a. What is the frequency of the incident light? b. How much energy per photon is projected onto the metal surface? c. How much energy per mole is projected onto the metal surface? d. What is the kinetic energy given to one electron that is released from the metal from the photoelectric effect?...
An atom with a first ionization energy of 939 kJ/mol, requires a photon of what maximum wavelength (nm) in order to remove a single electron from a single atom?
1. Find the kinetic energy of a photoelectron emitted from a rubidium (Rb) surface if the wavelength of the incident light is 400 nm (1 nm = 1·10^−9 m), and the binding (or threshold) energy of an electron is 3.6·10^−19J. (A) 5.0·10−19 J (B) 3.6·10−19J (C) 1.4·10−19 J (D) λthreshold > 400 nm, no emission of photoelectrons (E) λthreshold < 400 nm, no emission of photoelectrons Please show how you got the problem