Whiteboarding Electron Configurations Answers
1.
a)
Draw a Bohr model for hydrogen in ground state.
b) Draw a Bohr model for hydrogen in its fifth excited state.
c) Draw a Bohr model for hydrogen in its first excited state.
d) What colour light is emitted when the electron in hydrogen transitions from its fifth excited state to its
first excited state.
e) What type of electromagnetic radiation is emitted when the electron in hydrogen transitions from its fifth
excited state to its second excited state?
2. Describe two problems with Bohr’s model that led scientists to develop the quantum model.
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3. Sketch an outline of the periodic table and identify the s, p, d, and f blocks.
4. What is the difference between:
a) 2px and 3px
b) 2px and 2py
c) Draw one of the d suborbitals
5. What is the maximum number of electrons that can be found in:
a) an orbital
b) the 3d sublevel
c) the third energy level
6. In the sixth energy level, what is the:
a) maximum number of orbitals
b) maximum number of electrons that can be held
c) maximum number of h orbitals
c) the mathematical rule that dictates each of these values
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7. Write core configurations for the following:
a) Ni atom
b) Ni2+ ion
c) Ni3+ ion
d)
Cu atom
e) Cu+ ion
f) Cu2+ ion
g)
Bi atom
h) Bi3+ ion
i) Bi5+ ion
j)
N atom
k) N3- ion
l) N3+ ion
m)
Identify an atom, an anion, and a cation isoelectronic with the N 3- ion.
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5. For the atom fluorine:
a) Draw an overlay diagram of all the orbitals that are occupied by electrons in the ground state and place the
electrons into the orbitals you have drawn.
b)
Draw an orbital box diagram for fluorine.
c)
Draw an orbital box diagram for fluorine that violates one of the filling rules. Explain.
c)
e)
f)
Circle the core electrons and underline the valence electrons.
Write the electron configuration .
Write an excited electron configuration for fluorine.
g)
Write the core configuration for its most common ion.
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