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Electron-Dot Diagrams (Grades 11-12)

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Electron-Dot Diagrams

1. 
What is represented in the following electron-dot diagram?
Electron-Dot Diagram - Sodium
  1. All of the electrons in sodium
  2. The valence electrons in sodium
  3. The electrons in the first energy level
  4. None of the above
 
2. 
To which group does the following element belong?
Electron-Dot Diagram - Chlorine
  1. Group 1
  2. Group 7
  3. Group 17
  4. Group 18
3. 
Which of the following elements can react with the element shown below to form a configuration equivalent to that of a noble gas?
Electron-Dot Diagram - Fluorine
  1. Sodium
  2. Aluminum
  3. Magnesium
  4. Copper
 
4. 
What is the oxidation state of the element shown below?
Electron-Dot Diagram - Argon
  1. 8
  2. 0
  3. 18
  4. 36
5. 
What is the number of electrons in an ion of the following element?
Electron-Dot Diagram - Hydrogen
  1. 1
  2. 2
  3. 0
  4. 8
 
6. 
What is true about the following element?
Electron-Dot Diagram - Aluminum
  1. It gains 3 valence electrons to form an ion
  2. It loses 5 valence electrons to form an ion
  3. It loses 3 valence electrons to form an ion
  4. It gains 5 valence electrons to form an ion
7. 
Based on the number of valence electrons shown in the diagram below, what is the probable charge of the ion formed by this specific element?
Electron-Dot Diagram - Phosphorus
  1. 0
  2. +5
  3. -5
  4. -3
 
8. 
Based on the number of valence electrons shown in the diagram below, what can be reasonably inferred about this element?
Electron-Dot Diagram - Neon
  1. It is nonreactive
  2. It only reacts with elements with 6 valence electrons
  3. It is reactive with elements that have 1 valence electron
  4. None of the above
9. 
An element reacts with nitrogen to form a compound with the formula [math]X_3N_2[/math] and an electron configuration identical to that of the noble gas shown below.

(a) Based on the configuration of the noble gas shown below and the formula for the ionic compound formed, determine the most probable identity of this element, which exists in Period 3.

(b) Draw the Lewis electron-dot diagram of this element in atomic form.
Electron-Dot Diagram - Neon



 
10. 
Assuming that an atom of calcium is present, as shown in the image below, answer the following questions:

(a) Identify the nonmetal in Group 15 that will react with calcium to form an ionic compound, whose ions have an electron configuration identical to that of argon.

(b) Identify the chemical formula of the ionic compound formed from the metal and the nonmetal, based on your answer to part (a).
Electron-Dot Diagram - Calcium



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