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Structure of Atom Quiz-8

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10 Question

Popular Questions In Structure of Atom Quiz-8

  • What is the lowest energy of the spectral line emitted by the hydrogen atom in the Lyman series? (h = Planck’s constant, c = velocity of light, R = Rydberg’s constant)

  • Calculate the wavelength (in nanometer) associated with a proton moving at 1.0×103ms11.0 \times 10^3ms^{-1}.(mass of proton =1.67×1027kg= 1.67 \times 10^{-27}kg  and h=6.63×1034Js)h = 6.63 \times 10^{-34} Js)

  • The energy required to break one mole of Cl-Cl bonds in Cl2Cl_2 is 242 kJ mol1\text{mol}^{-1}. The longest 2 wavelength of light capable of breaking a single Cl-Cl bond is

  • The frequency of light emitted for the transition n = 4 to n = 2 of He+He^+ is equal to the transition in H atom corresponding to which of the following?

  • Which of the following statements is correct for an electron that has the quantum numbers n = 4 and m = -2?

  • What is the ratio of energies of an electron is 1st orbit of He+He^+and H?

  • Radius of which orbit of He+He^+ is one half as that of 4th orbit of Be3+Be^{3+}?

  • In an atom, an electron is moving with a speed of 600 m/s with an accuracy of 0.005%. Certainty with which the position of an electron can be located is (h=6.6×1034kgm2s1h = 6.6\times 10^{-34}\,kg\,m^2s^{-1} ; mass of electron em=9.1×1031kge_m= 9.1 \times 10^{-31} kg)

  • Ionisation energy of He+He^+is 19.6×1018J19.6 \times 10^{-18}J atom1^{-1}. The energy of the stationary state (n = 1) of Li2+Li^{2+}is

  •  A gas absorbs a photon of 355 nm and emits at two wavelengths. If one of the emission is at 680 nm, the other is at