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- 1. Multiple Choice
How many electrons are shown in the Lewis electron-dot structure of Carbon (C)?
5
1
4
8
- 2. Multiple Choice
How many electrons are shown in the Lewis electron-dot structure of Nitrogen (N)?
4
5
8
1
- 3. Multiple Choice
Which of the following is a reason that Lewis electron dot diagrams only show electrons in the outmost orbital of an atom?
Outer-shell electrons have less energy than inner-shell electrons.
Lewis electron-dot diagrams would get too complicated if each atom showed all of its electrons.
Inner-shell electrons cannot be proven to exist and thus should not be included in a Lewis electron dot structue.
Only outer shell electrons can be involved in chemical bonds.
- 4. Multiple Choice
In Lewis structures, the valence electrons are represented by ___________.
Dots
Lines
Arrows
None of the above
Dashes
- 5. Multiple Choice
Given the Lewis dot structures of oxygen and magnesium, predict the ionic formula ________.
Mg2O6
MgO
Mg6O2
MgO4
- 6. Multiple Choice
Which of the following is the Lewis dot structure for Si?
- 7. Multiple Choice
Which if the following is the correct Lewis dot structure for C2H4
- 8. Multiple Choice
________ molecules have single covalent bonds with the two electrons allowing each atom to attain the helium configuration.
Lithium
Hydrogen
Sodium
Rubidium
- 9. Multiple Choice
True or False?
Both of the above Lewis structures are correct.
True
False
- 10. Multiple Choice
Which of the following is the correct Lewis dot structure for C2Cl2?
- 11. Multiple Choice
In the diatomic molecule HCl, the H and Cl share a pair of electrons. By doing so, the hydrogen atom attains the electron configuration of ________ while chlorine attains the electron configuration of ________.
helium; argon
neon; neon
helium; neon
neon; argon
- 12. Multiple Choice
Every line representing a bond represents _______ electron(s).
1
3
4
2
- 13. Multiple Choice
Which of the following Lewis dot structure is wrong?
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