A singly ionized helium atom has an electron in the n = 1 state. What is the total energy of the electron?

Q: A hydrogen atom in the ground state absorbs a 12.75 eV photon. Immediately after the absorption, the…

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Q: An x ray with a wavelength of 0.100 nm collides with an electron that is initially at rest. The x…

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Q: A hydrogen atom in its n = 9 state is ionized by absorbing a 109 nm photon. If all the excess energy…

A: The value of the wavelength of the incident photon is λ=109 nm The state of the hydrogen atom is n=9…

Q: Cesium has a work function of 2.14 eV where 1.0 eV = 1.602 x 10^-9J. If radiation with a wavelength…

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Q: A singly ionized helium atom has an electron in the n = 4 state. What is the kinetic energy of the…

A: The total energy of an electron in a Helium atom can be calculated as follows.

Q: Can an electron in a hydrogen atom have a speed of 3.60 × 105 m/s? If so, what are its energy and…

A: The expression for the velocity of electron in Hydrogen atom is given by, Here, n is the state of…

Q: A proton is in a one-dimensional box of width 7.8 pm (1 pm = 1 x 10-¹2 m). The energy of the proton…

A: One proton is in a one dimensional box.Width of box is 7.8 pm Energy of photon = energy of ground…

Q: The radius of a cadmium atom is approximately 0.16 nm. What is the ionization energy?

A: Given Data: The radius of a Cadmium atom is, r=0.16 nm   The expression for the nth ionization…

Q: An isolated atom of certain element emits light of wavelength 529 nm when the atom falls from its…

A: A photon is nothing but a quantum of energy. When an atom makes a transition from an upper excited…

Q: A photon is emitted by an atom when one of the electrons orbiting the atom drops from an energy…

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The Bohr model

Students often get confused between Rutherford’s model and Bohr model of an atom. They interpret the postulates of both these models to be the same, which is incorrect. Rutherford’s model differs from Bohr’s model in the following ways: