E.1 Structure of the atom

E.1 Structure of the atom Quiz

IB Physics HL: Quiz

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5 questions, one answer each

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  1. 1. In 2040Ca^{40}_{20}\mathrm{Ca}, the number of neutrons is:

    • A. 20
    • B. 40
    • C. 60
    • D. 18

  2. 2. Absorption lines of an element appear at:

    • A. Longer wavelengths than its emission lines
    • B. The same wavelengths as its emission lines
    • C. Shorter wavelengths than its emission lines
    • D. Random wavelengths

  3. 3. HL: Nucleus X has 8 times the nucleon number of nucleus Y. The ratio of their radii is:

    • A. 2
    • B. 8
    • C. 4
    • D. 512

  4. 4. HL: The energy of the n = 2 level of hydrogen is:

    • A. −6.8 eV
    • B. −3.4 eV
    • C. −1.5 eV
    • D. −27.2 eV

  5. 5. HL: Increasing the kinetic energy of alpha particles in a head-on collision with a nucleus makes the distance of closest approach:

    • A. Larger
    • B. Smaller
    • C. Unchanged
    • D. Zero

Quiz