객관식
Which electrons in an atom are primarily responsible for participating in chemical bonding?
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- 1. Intro to General Chemistry3h 46m
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- The Alkyl Groups9m
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- 23. Chemistry of the Nonmetals2h 39m
- Main Group Elements: Bonding Types4m
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- Noble Gas Compounds3m
- 24. Transition Metals and Coordination Compounds3h 19m
- Atomic Radius & Density of Transition Metals11m
- Electron Configurations of Transition Metals7m
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- Paramagnetism and Diamagnetism10m
- Ligands10m
- Complex Ions5m
- Coordination Complexes7m
- Classification of Ligands11m
- Coordination Numbers & Geometry9m
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- Isomerism in Coordination Complexes17m
- Orientations of D Orbitals4m
- Intro to Crystal Field Theory10m
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- Crystal Field Theory Summary8m
- Magnetic Properties of Complex Ions9m
- Strong-Field vs Weak-Field Ligands6m
- Magnetic Properties of Complex Ions: Octahedral Complexes11m
10. Periodic Properties of the Elements
Valence Electrons of Elements
Multiple Choice
How many valence electrons does a fluorine atom have?
A
8
B
5
C
7
D
6
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검증된 단계별 안내1
Identify the atomic number of fluorine, which is 9. This means a fluorine atom has 9 electrons in total.
Recall that valence electrons are the electrons in the outermost shell (energy level) of an atom.
Determine the electron configuration of fluorine: 1s\^2 2s\^2 2p\^5.
Recognize that the first shell (1s) is full with 2 electrons, and the second shell contains the remaining electrons (2s\^2 2p\^5).
Count the electrons in the outermost shell (second shell): 2 (from 2s) + 5 (from 2p) = 7 valence electrons.
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