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Transcript
```SCHOOL OF CHEMISTRY & PHYSICS
WESTVILLE CAMPUS
General Principles of Chemistry – CHEM110
Tutorial 7 – 2nd and 4th April 2014
The Wave Nature of Light
1. A certain violet line in a spectrum has a wavelength of 4.1 × 10-5 cm. What is the energy of
the photons which give rise to this line?
The Energy States of the Hydrogen Atom
2. Calculate the following:
a)
Energy of the transition from the first energy level to the third energy level in
a hydrogen atom.
b)
The wave-number at which this electronic transition occurs.
c)
Identify the spectroscopic process that takes place in Q2(a) above.
Quantum numbers
3. Write the four quantum numbers for an electron in the 2p orbital of nitrogen, N.
4. List the possible values of l and ml for an electron in the following subshells.
i)
4s
ii)
5p
1
SCHOOL OF CHEMISTRY & PHYSICS
WESTVILLE CAMPUS
5. If the principal quantum number, n, for an atomic orbital is 3:
a)
What are the possible values of l?
b)
i)
For each value of l what are the possible values of ml?
ii)
What are the different atomic orbitals possible when n = 3?
iii)
What is the total number of orbitals present in a shell with n = 3?
Electronic configuration
6.
7.
8.
Write the complete electron configuration for the following:
i)
Potassium, K
ii)
Ba2+
iii)
Cl-
Use the periodic table to write the condensed ground state electron configuration for
(i)
Yttruim,Y
(ii)
Krypton, Kr
Consider the valence electrons of Al (period 3, group 13) and indicate with the aid of an
orbital diagram whether the atom is paramagnetic or diamagnetic.
2
```
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