Doubts
Sign in
12thPass logo
New chatPYQ LibraryDoubtsRank report
Sign in to see Recents
Sign in to save progress →
Doubts
Sign in

Structure of Atom question

2013 · Shift 0 · Q23
Guest · try one question or challengeGuest · try one question or challenge
  1. PYQ Library
  2. /JEE Main
  3. /Chemistry
  4. /Structure of Atom
  5. /2013 · Shift 0 · Q23

Structure of Atom question

2013 · Shift 0 · Q23

JEE MainChemistryStructure of AtomMCQ+4 / −1
Energy of an electron is given by E=−2.178×10−18J(Z2n2)E = - 2.178 \times {10^{ - 18}}J\left( {{{{Z^2}} \over {{n^2}}}} \right)E=−2.178×10−18J(n2Z2​). Wavelength of light required to excite an electron in an hydrogen atom from level n = 1 to n = 2 will be (h = 6.62 × 10−34 Js and c = 3.0 × 108 ms−1)
  1. A
    2.816 × 10−7 m
  2. B
    6.500 × 10−7 m
  3. C
    8.500 × 10−7 m
  4. D
    1.214 × 10−7 m
PreviousNext

More from Structure of Atom

  • The electrons identified by quantum numbers n and l : (a) n = 4, l= 1 (b) n = 4, l= 0 (c) n = 3, l= 2 (d) n = 3, l = 1 Can be placed in order of increasing energy as :2012 · MCQ
  • A gas absorbs a photon of 355 nm and emits at two wavelengths. If one of the emissions is at 680 nm, the other is at :2011 · MCQ
  • Ionisation energy of He+ is 19.6 x 10–18 J atom–1. The energy of the first stationary state (n = 1) of Li2+ is2010 · MCQ
  • The energy required to break one mole of Cl–Cl bonds in Cl2​ is 242 kJ mol–1. The longest wavelength of light capable of breaking a single Cl – Cl bond is (c = 3 x 108 ms–1 and NA = 6.02 x 1023 mol–1)2010 · MCQ
  • In an atom, an electron is moving with a speed of 600 m/s with an accuracy of 0.005%. Certainity with which the position of the electron can be located is (h = 6.6 × 10-34 kg m2s-1, mass of electron, em = 9.1 × 10-31 kg)2009 · MCQ
  • Calculate the wavelength (in nanometer) associated with a proton moving at 1.0 x 103 ms−1 (Mass of proton = 1.67 × 10-27 kg and h = 6.63 × 10-34 Js) :2009 · MCQ
  • The ionization enthalpy of hydrogen atom is 1.312 × 106 J mol−1. The energy required to excite the electron in the atom from n = 1 to n = 2 is2008 · MCQ
  • Which one of the following constitutes a group of the isoelectronic species?2008 · MCQ