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Structure of Atom

24 questions · Chemistry · JEE Advanced
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Structure of Atom

24 questions · Chemistry · JEE Advanced

  1. Among the following, the correct statement(s) for electrons in an atom is(are)2024 · Shift 1 · Q5 · Multiple correct
  2. According to Bohr's model, the highest kinetic energy is associated with the electron in the2024 · Shift 2 · Q1 · MCQ
  3. For He+, a transition takes place from the orbit of radius 105.8pm to the orbit of radius 26.45pm. The wavelength (in nm) of the emitted photon during the transition is ​. [Use…2023 · Shift 2 · Q11 · Numerical
  4. For diatomic molecules, the correct statement(s) about the molecular orbitals formed by the overlap of two 2pz​ orbitals is(are)2022 · Shift 1 · Q9 · Multiple correct
  5. Consider a helium (He) atom that absorbs a photon of wavelength 330 nm. The change in the velocity (in cm s − 1) of He atom after the photon absorption is ​. (Assume : Momentum is conserved when photon is…2021 · Shift 2 · Q18 · Numerical
  6. The figure below is the plot of potential energy versus internuclear distance (d) of H2​ molecule in the electronic ground state. What is the value of the net potential energy E0 (as indicated in the figure) in kJ mol-1, for d = d0 at… Includes diagram2020 · Shift 2 · Q15 · Numerical
  7. Consider the Bohr's model of a one-electron atom where the electron moves around the nucleus. In the following List-I contains some quantities for the nth orbit of the atom and List-II contains options showing how they depend on n. Which… Includes diagram2019 · Shift 2 · Q15 · MCQ
  8. Consider the Bohr's model of a one-electron atom where the electron moves around the nucleus. In the following List-I contains some quantities for the nth orbit of the atom and List-II contains options showing how they depend on n. Which… Includes diagram2019 · Shift 2 · Q16 · MCQ
  9. The ground state energy of hydrogen atom is − 13.6 eV. Consider an electronic state ψ of He+ whose energy, azimuthal quantum number and magnetic quantum number are − 3.4 eV, 2 and 0, respectively. Which of the following…2019 · Shift 2 · Q3 · Multiple correct
  10. The wave function, ψn,1,m1​​ is a mathematical function whose value depends upon spherical polar coordinates (r,θ,ϕ) of the electron and characterized by the quantum numbers n,1 and m1​. Here r… Includes diagram2017 · Shift 1 · Q16 · MCQ
  11. The wave function, ψn,1,m1​​ is a mathematical function whose value depends upon spherical polar coordinates (r,θ,ϕ) of the electron and characterized by the quantum numbers n,1 and m1​. Here r… Includes diagram2017 · Shift 1 · Q17 · MCQ
  12. The wave function, ψn,1,m1​​ is a mathematical function whose value depends upon spherical polar coordinates (r,θ,ϕ) of the electron and characterized by the quantum numbers n,1 and m1​. Here r… Includes diagram2017 · Shift 1 · Q18 · MCQ
  13. P is the probability of finding the 1s electron of hydrogen atom in a spherical shell of infinitesimal thickness, dr, at a distance r from the nucleus. The volume of this shell is 4πr2dr. The quantitative ketch of the dependence of P…2016 · Shift 1 · Q7 · MCQ
  14. Not considering the electronic spin, the degeneracy of the second excited state( n = 3) of H atom is 9, while the degeneracy of the second excited state of H– is ​.2015 · Shift 1 · Q8 · Numerical
  15. In an atom, the total number of electrons having quantum numbers n = 4, |ml| = 1 and ms = –1/2 is2014 · Shift 1 · Q6 · Numerical
  16. The atomic masses of He and Ne are 4 and 20 a.m.u., respectively. The value of the de Broglie wavelength of He gas at –73oC is “M” times that of the de Broglie wavelength of Ne at 727oC. M is2013 · Shift 1 · Q1 · Numerical
  17. The kinetic energy of an electron in the second Bohr orbit of a hydrogen atom is [α0​ is Bohr radius]2012 · Shift 1 · Q6 · MCQ
  18. The maximum number of electrons that can have principal quantum number, n = 3, and spin quantum number, ms = − 1/2 , is2011 · Shift 1 · Q8 · Numerical
  19. The work function ( φ ) of some metals is listed below. The number of metals which will show photoelectric effect when light of 300 nm wavelength falls on the metal is Includes table2011 · Shift 1 · Q9 · Numerical
  20. The hydrogen like species Li2+ is in a spherically symmetric state S1 with one radial node. Upon absorbing light the ion undergoes transition to a state S2. The state S2 has one radial node and its energy is equal to the ground state…2010 · Shift 2 · Q3 · MCQ
  21. The hydrogen like species Li2+ is in a spherically symmetric state S1 with one radial node. Upon absorbing light the ion undergoes transition to a state S2. The state S2 has one radial node and its energy is equal to the ground state…2010 · Shift 2 · Q4 · MCQ
  22. The hydrogen like species Li2+ is in a spherically symmetric state S1 with one radial node. Upon absorbing light the ion undergoes transition to a state S2. The state S2 has one radial node and its energy is equal to the ground state…2010 · Shift 2 · Q5 · MCQ
  23. STATEMENT - 1 : The plot of atomic number (y-axis) versus number of neutrons (x-axis) for stable nuclei shows a curvature towards x-axis from the line of 45o slope as the atomic number is increased. STATEMENT - 2 : Proton-proton…2008 · Shift 1 · Q1 · MCQ
  24. Match the entries in Column I with the correctly related quantum number(s) in Column II. Indicate your answer by darkening the appropriate bubbles of the 4 × 4 matrix given in the ORS. Includes table2008 · Shift 2 · Q1 · MCQ