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How many electrons does a neutral potassium atom have?
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- 1. Intro to General Chemistry3h 46m
- Classification of Matter18m
- Physical & Chemical Changes19m
- Chemical Properties7m
- Physical Properties5m
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- 2. Atoms & Elements4h 17m
- The Atom9m
- Subatomic Particles15m
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- 10. Periodic Properties of the Elements3h 10m
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- 22. Organic Chemistry5h 7m
- Introduction to Organic Chemistry8m
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- Skeletal Formula6m
- Spatial Orientation of Bonds3m
- Intro to Hydrocarbons16m
- Isomers11m
- Chirality15m
- Functional Groups in Chemistry11m
- Naming Alkanes4m
- The Alkyl Groups9m
- Naming Alkanes with Substituents13m
- Naming Cyclic Alkanes6m
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- Naming Alcohols11m
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- Naming Ketones5m
- Naming Aldehydes5m
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- Naming Ethers5m
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- Naming Benzene7m
- Alkane Reactions7m
- Intro to Addition Reactions4m
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- 23. Chemistry of the Nonmetals2h 39m
- Main Group Elements: Bonding Types4m
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- Main Group Elements: Density11m
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- The Electron Configuration Review16m
- Periodic Table Charges Review20m
- Hydrogen Isotopes4m
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- Production of Hydrogen8m
- Group 1A and 2A Reactions7m
- Boron Family Reactions7m
- Boron Family: Borane7m
- Borane Reactions7m
- Nitrogen Family Reactions12m
- Oxides, Peroxides, and Superoxides12m
- Oxide Reactions4m
- Peroxide and Superoxide Reactions6m
- 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
- Writing Formulas of Coordination Compounds8m
- 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
2. Atoms & Elements
The Atom
Multiple Choice
In a water molecule (H₂O), which atom has a slightly negative charge?
A
Oxygen
B
Hydrogen
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검증된 단계별 안내1
Understand that in a water molecule (H₂O), there are two hydrogen atoms and one oxygen atom.
Recall that oxygen is more electronegative than hydrogen. Electronegativity is the tendency of an atom to attract electrons towards itself.
In a covalent bond, the more electronegative atom will attract the shared electrons more strongly, causing a partial negative charge on that atom.
Since oxygen is more electronegative than hydrogen, the shared electrons in the O-H bonds are pulled closer to the oxygen atom.
As a result, the oxygen atom in a water molecule carries a slightly negative charge, while the hydrogen atoms carry a slightly positive charge.
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