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Which term describes the region surrounding the nucleus where electrons are most likely to be found?
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Indice
- 1. Intro to General Chemistry4h 5m
- Classification of Matter18m
- Physical & Chemical Changes19m
- Chemical Properties7m
- Physical Properties6m
- Intensive vs. Extensive Properties15m
- Temperature13m
- Scientific Notation13m
- SI Units8m
- Metric Prefixes26m
- Significant Figures9m
- Significant Figures: Precision in Measurements9m
- Significant Figures: In Calculations17m
- Conversion Factors16m
- Dimensional Analysis24m
- Density12m
- Density of Geometric Objects19m
- Density of Non-Geometric Objects6m
- 2. Atoms & Elements4h 40m
- The Atom10m
- Subatomic Particles17m
- Isotopes17m
- Ions27m
- Atomic Mass32m
- Periodic Table: Classifications15m
- Periodic Table: Group Names8m
- Periodic Table: Representative Elements & Transition Metals7m
- Periodic Table: Element Symbols6m
- Periodic Table: Elemental Forms6m
- Periodic Table: Phases9m
- Periodic Table: Charges20m
- Calculating Molar Mass10m
- Mole Concept31m
- Law of Conservation of Mass5m
- Law of Definite Proportions12m
- Atomic Theory9m
- Law of Multiple Proportions8m
- Millikan Oil Drop Experiment8m
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- 3. Chemical Reactions4h 34m
- Empirical Formula18m
- Molecular Formula21m
- Combustion Analysis39m
- Combustion Apparatus16m
- Polyatomic Ions25m
- Naming Ionic Compounds12m
- Writing Ionic Compounds8m
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- Naming Acids23m
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- Balancing Chemical Equations14m
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- Percent Yield21m
- Mass Percent6m
- Functional Groups in Chemistry11m
- 4. BONUS: Lab Techniques and Procedures1h 30m
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- 6. Chemical Quantities & Aqueous Reactions4h 17m
- Solutions9m
- Molarity22m
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- Dilutions15m
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- Gas Evolution Equations13m
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- Calculate Oxidation Numbers16m
- Redox Reactions20m
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- Thermal Equilibrium8m
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- 10. Periodic Properties of the Elements3h 49m
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- The Electron Configurations: Exceptions17m
- The Electron Configuration: Ions12m
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- 12. Molecular Shapes & Valence Bond Theory2h 11m
- 13. Liquids, Solids & Intermolecular Forces2h 41m
- Molecular Polarity10m
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- Phase Diagrams13m
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- Intro to Henry's Law4m
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- The Colligative Properties17m
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- 17. Acid and Base Equilibrium5h 5m
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- Bases Introduction7m
- Binary Acids15m
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- Bases14m
- Amphoteric Species5m
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- Diprotic Acids and Bases8m
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- 18. Aqueous Equilibrium4h 47m
- Intro to Buffers21m
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- Strong Titrate-Strong Titrant Curves9m
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- Titrations: Weak Acid-Strong Base38m
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- Titrations: Diprotic & Polyprotic Buffers32m
- Solubility Product Constant: Ksp17m
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- Intro to Radioactivity10m
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- Band of Stability: Alpha Decay & Nuclear Fission10m
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- Band of Stability: Electron Capture & Positron Emission4m
- Band of Stability: Overview14m
- Measuring Radioactivity7m
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- Radioactive Half-Life16m
- Mass Defect19m
- Nuclear Binding Energy14m
- 22. Organic Chemistry5h 4m
- Introduction to Organic Chemistry8m
- Structural Formula8m
- Condensed Formula10m
- Skeletal Formula6m
- Spatial Orientation of Bonds3m
- Intro to Hydrocarbons16m
- Isomers11m
- Chirality12m
- Functional Groups in Chemistry11m
- Naming Alkanes4m
- The Alkyl Groups9m
- Naming Alkanes with Substituents13m
- Naming Cyclic Alkanes6m
- Naming Other Substituents8m
- Naming Alcohols11m
- Naming Alkenes11m
- Naming Alkynes9m
- Naming Ketones5m
- Naming Aldehydes5m
- Naming Carboxylic Acids4m
- Naming Esters8m
- Naming Ethers5m
- Naming Amines5m
- Naming Benzene7m
- Alkane Reactions7m
- Intro to Addition Reactions4m
- Halogenation Reactions4m
- Hydrogenation Reactions3m
- Hydrohalogenation Reactions7m
- Alcohol Reactions: Substitution Reactions4m
- Alcohol Reactions: Dehydration Reactions9m
- Intro to Redox Reactions8m
- Alcohol Reactions: Oxidation Reactions7m
- Aldehydes and Ketones Reactions6m
- Ester Reactions: Esterification4m
- Ester Reactions: Saponification3m
- Carboxylic Acid Reactions4m
- Amine Reactions3m
- Amide Formation4m
- Benzene Reactions10m
- 23. Chemistry of the Nonmetals2h 39m
- Main Group Elements: Bonding Types4m
- Main Group Elements: Boiling & Melting Points7m
- Main Group Elements: Density11m
- Main Group Elements: Periodic Trends7m
- The Electron Configuration Review16m
- Periodic Table Charges Review20m
- Hydrogen Isotopes4m
- Hydrogen Compounds11m
- 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
- Crystal Field Theory: Tetrahedral Complexes4m
- 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
Scelta multipla
What is the mass number of an atom that contains 5 protons and 7 neutrons?
A
2
B
7
C
5
D
12
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Guida verificata passo dopo passo1
Identify the number of protons in the atom, which is given as 5. The number of protons defines the atomic number.
Identify the number of neutrons in the atom, which is given as 7.
Recall that the mass number of an atom is the sum of the number of protons and neutrons in its nucleus.
Write the formula for the mass number: \(\text{Mass Number} = \text{Number of Protons} + \text{Number of Neutrons}\).
Substitute the given values into the formula: \(\text{Mass Number} = 5 + 7\).
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