/10 Report a question What's wrong with this question? You cannot submit an empty report. Please add some details. 12345678910 Chapter 12 : Atoms This Quiz Contains a set of 10 Questions. The Passing Cut-off is 60%. To start the Quiz, click on the Start Button. All the Best! 1 / 10 If α-particle is scattered by 180°, the impact parameter is Maximum Zero Minimum non-zero Infinite 2 / 10 When an electron is at infinite distance from its nucleus, then the energy of the electron is: Positive Maximum negative Infinite Zero 3 / 10 If an α-particle approaches a nucleus with impact parameter zero, scattering angle is 90° 45° 180° 0° 4 / 10 The wavelength of photon emitted when electron jumps from n=3 to n=2 is approx. 656 nm 486 nm 434 nm 410 nm 5 / 10 Energy of n = 3 state is –1.51 eV. Binding energy is 13.6 eV 3.4 eV 10.2 eV 1.51 eV 6 / 10 The visible region of spectral line corresponds to: Balmer series Lyman series Paschen series Brackett series 7 / 10 The ionisation energy of hydrogen atom is 3.4 eV 6.8 eV 10.2 eV 13.6 eV 8 / 10 If Rydberg constant for hydrogen is R, for He⁺ it is R/4 R 2R 4R 9 / 10 The energy of an electron in the second orbit of hydrogen atom is –3.4 eV –1.51 eV –13.6 eV –0.85 eV 10 / 10 A hydrogen atom absorbs 10.2 eV. The electron jumps from n=1→2 n=2→3 n=3→4 n=1→3 Your score is 0% Restart quiz
