Multiple Choice
How many valence electrons does an oxygen (O) atom have?
Table of contents
- 1. Intro to General Chemistry3h 48m
- Classification of Matter18m
- Physical & Chemical Changes19m
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- 22. Organic Chemistry5h 7m
- Introduction to Organic Chemistry8m
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- Skeletal Formula6m
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- Intro to Hydrocarbons16m
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- Functional Groups in Chemistry11m
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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
- Electron Configurations of Transition Metals: Exceptions11m
- Paramagnetism and Diamagnetism10m
- Ligands10m
- Complex Ions5m
- Coordination Complexes7m
- Classification of Ligands11m
- Coordination Numbers & Geometry9m
- Naming Coordination Compounds22m
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- Isomerism in Coordination Complexes17m
- Orientations of D Orbitals4m
- Intro to Crystal Field Theory10m
- Crystal Field Theory: Octahedral Complexes5m
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- Crystal Field Theory: Square Planar Complexes4m
- Crystal Field Theory Summary8m
- Magnetic Properties of Complex Ions9m
- Strong-Field vs Weak-Field Ligands6m
- Magnetic Properties of Complex Ions: Octahedral Complexes11m
- 1. The Chemical World10m
10. Periodic Properties of the Elements
Valence Electrons of Elements
Multiple Choice
How many valence electrons does a fluorine atom have?
A
7
B
5
C
6
D
8
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Verified step by step guidance1
Identify the element in question, which is fluorine (F).
Determine the atomic number of fluorine, which is 9, meaning it has 9 electrons in total.
Recall that valence electrons are the electrons in the outermost shell of an atom.
Write the electron configuration of fluorine: \$1s^2 2s^2 2p^5$.
Count the electrons in the outermost shell (the second shell), which includes the \$2s^2\( and \)2p^5$ electrons, totaling 7 valence electrons.
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