Atomic Structure and Bonding Tutorial Questions
NB: Use the formula sheet and constants available on RUConnected. Your final answers will be
entered online for all questions.
PART A (Complete by 6 March – deadline 9 March online)
Given the four equations:
(A) c = (B) E = h (C) =h
mv (D) E = −RE(1
nf
2−1
ni
2)
1. A photon has exactly the same wavelength as an electron traveling at 0.1% c. In order to
determine the energy of the photon, which equations must we use?
2. A photon of ultraviolet light has frequency 9.35 x 1014 s-1. In order to calculate the
wavelength of a photon of this light, which of the equations must we use?
3. In order to determine the energy of a photon of wavelength 650 nm emitted by an atom,
which of the equations must we use?
4. Determine the energy of a photon of wavelength 650 nm
5. A hydrogen ion (H+) encounters an electron which ends up in energy level 3. In order to
determine the wavelength of the photon emitted in the process, which of the equations
must we use?
6. A hydrogen ion (H+) encounters an electron which ends up in energy level 3. Determine the
wavelength of the photon emitted in the process.
7. Each of the following electron configurations comes from a Nitrogen atom or ion; match the
appropriate descriptions (impossible, excited, ground state(full or noble gas),N3-).
[He]2s2 2p3 1s2 2s2 2p6 1s2 2s32p2 1s2 2s1 2p33d1 1s2 2s2 2p3
8. Give the full electron configuration for Zn. Provide an orbital diagram for Zn.
9. Is Zn paramagnetic or diamagnetic?
10. Cr and Cu do not follow the building up principle. What are their electron configurations?
11. The second is defined as the time it takes for 9192631770 wavelengths of a transition of the
133Cs atom to pass a fixed point. What is the wavelength of radiation?
12. The n quantum number of an atomic orbital is 5. What possible values are there for l and for
ml?
13. Which of the following sets of q numbers are possible for an electron in an atom?
n=2, l=0, ml=0, ms=+ ½ n=1, l=1, ml=0, ms=+ ½
n=0, l=0, ml=0, ms=- ½ n=2, l=1, ml=-1, ms=+ ½
n=2, l=1, ml=-2, ms=+ ½
14. What is the number of different orbitals in each of the following subshells? ( 5f, 5g, 6s, 5p)
PART B (Complete by 6 March – deadline 9 March online)
Do this question on paper and upload your answer to RUConnected
1. Ultraviolet lamps are regularly used to sterilize medical equipment, such as forceps. These
lamps may convert 18% of electrical energy to light. If the wavelength of the ultraviolet light
released from the lamp is 0.252 μm, calculate the electrical energy required to produce
1.51x10-3 moles of photons.
