This quiz contains a mix of SL and HL questions
Target: 10 Questions in 10 minutes

An IB Chemistry data booklet is helpful
1. Emission spectra are produced when photons are emitted from atoms as ...
  • A.   excited electrons return to lower energy levels
  • B.   ground state electrons are excited from lower to higher energy levels
  • C.   protons and neutrons rearrange themselves in the nucleus
  • D.   excited electrons move to higher energy levels

2. Which statement is true?

  • A.   Blue light has a higher energy and lower frequency than red light
  • B.   Blue light has lower energy and shorter wavelength than red light
  • C.   Red light has a higher energy and higher frequency than blue light
  • D.   Red light has a lower energy and longer wavelength then blue light

3. What are the relationships between energy and wavelength, and energy and frequency across the electromagnetic spectrum?

  Wavelength Frequency
A $\mathsf {{energy} \propto {wavelength}}$ $\mathsf {{energy} \propto {frequency}}$
B $\mathsf {{energy} \propto {wavelength}}$ $\mathsf {{energy} \propto {1 \over frequency}}$
C $\mathsf {{energy} \propto {1 \over wavelength}}$ $\mathsf {{energy} \propto {frequency}}$
D $\mathsf {{energy} \propto {1 \over wavelength}}$ $\mathsf {{energy} \propto {1 \over frequency}}$
4. Which statement is false?
  • A.   A continuous spectrum contains all possible frequencies
  • B.   A line emission spectrum is produced by electrons moving from higher to lower energy levels
  • C.   Specific frequencies of energy are absorbed in a line emission spectrum
  • D.   A line spectrum consists of discrete lines of specific wavelengths

Q5-8:
The line emission spectrum of hydrogen in the visible region is shown below:

Hydrogen line spectrum

 Patrick Edward Moran
CC-BY-SA 3.0
5. This spectrum provides evidence that ..
  • A.   Energy levels converge at higher energy
  • B.   Energy levels are evenly distributed
  • C.   Energy levels converge at lower energy
  • D.   Energy levels are randomly arranged
6.Which statement is true for the hydrogen emission spectrum in the visible region?
  • A.   The lines are produced when electrons move from lower to higher energy levels
  • B.   The lines are due to electron transitions into the first energy level
  • C.   The red line represents the greatest energy transition
  • D.   The lines are due to electron transitions into the second energy level
7. Which electronic transition represents the greatest energy release?
  • A.   n = 3 to n = 5
  • B.   n = ∞ to n = 3
  • C.   n = 1 to n = 3
  • D.   n = 2 to n = 1

8. The diagram below (not to scale) represents some of the electron energy levels in the hydrogen atom. Which of the following arrows represents a transition requiring energy in the visible region of the electromagnetic radiation?

4 possible transitions in a hydrogen spectrum
9.(AHL only) One of the lines in the visible spectrum of helium has a wavelength of 668nm. What is the energy of the electron transition which produces this line?
  • A.   2.98x10-19 J
  • B.   2.98x10-28 J
  • C.   4.43x10-31 J
  • D.   4.43x10-40 J
10. (AHL only) In the hydrogen emission spectrum, the frequency of the convergence limit in the electron transition to n=1 level is 3.29x1015Hz. What is the correct calculation for the ionization energy of hydrogen in kJ mol-1?
  • A.   6.63x10-34 x 3.29x1015
  • B.   $\mathsf {{6.63\times 10^{-34} \, \times \,3.29\times 10^{15}} \over {1000}}$
  • C.   $\mathsf {{6.63\times 10^{-34} \, \times \,3.29\times 10^{15}\times \, 6.02\times 10^{23}} \over {1000 \, }}$
  • D.   $\mathsf {{6.63\times 10^{-34} \, \times \,3.00\times 10^{8} \, \times \, 6.02\times 10^{23}} \over {1000 \, \times \, 3.29\times 10^{15}}}$