4.2 - Valence Electrons & Electron-dot Diagrams Quiz
7 Questions
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Questions and Answers
- 1.Which of the following is the correct electron-dot diagram for an atom with an electron configuration of 2-8-18-5?
- A.
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- B.
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- C.
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- D.
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- 2.Which of the following is the correct electron-dot diagram for an atom with an electron configuration of 2-8-18-7?
- A.
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- B.
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- C.
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- D.
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- 3.Which of the following represents an atom of chlorine in the ground state?
- A.
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- B.
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- C.
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- D.
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- 4.Which of the following is an element with similar chemical properties to that of boron?
- A.
Carbon
- B.
Germanium
- C.
Magnesium
- D.
Nitrogen
- E.
Gallium
- 5.A new element, Uuo, is one of the elements in Group 18. Which of the following correctly states how many valence electrons would be expected in an atom of the element Uuo in the ground state and provides the best reasoning?
- A.
7 valence electrons, since elements in Group 18 tend to have 7 valence electrons, so Uuo also has 7 valence electrons, since it's also a member of Group 18.
- B.
8 valence electrons, since elements in Group 18 tend to have 8 valence electrons, so Uuo also has 8 valence electrons, since it's also a member of Group 18.
- C.
6 valence electrons, since elements in Group 18 tend to have 6 valence electrons, so Uuo also has 6 valence electrons, since it's also a member of Group 18.
- D.
Both (A) and (C)
- 6.Carbon and element Y have similar chemical properties. Which of the following correctly represents one possible configuration of element Y?
- A.
2-6
- B.
2-8-18-4
- C.
2-8-8
- D.
2-2
- 7.
- A.
Copper
- B.
Boron
- C.
Tungsten
- D.
Cesium
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