객관식
Which of the following does NOT accurately describe the forces that exist within an atom?
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- 1. Intro to General Chemistry4h 5m
- Classification of Matter18m
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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
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- Borane Reactions7m
- Nitrogen Family Reactions12m
- Oxides, Peroxides, and Superoxides12m
- Oxide Reactions4m
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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
- 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 Summary8m
- Magnetic Properties of Complex Ions9m
- Strong-Field vs Weak-Field Ligands6m
- Magnetic Properties of Complex Ions: Octahedral Complexes11m
2. Atoms & Elements
The Atom
객관식
Which one of the following is the most abundant gas in Earth's atmosphere?
A
Ar (argon)
B
N_2 (nitrogen)
C
O_2 (oxygen)
D
CO_2 (carbon dioxide)
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검증된 단계별 안내1
Understand that Earth's atmosphere is composed of several gases, each present in different proportions.
Recall that the most abundant gas is the one with the highest volume or mole fraction in the atmosphere.
Recognize that nitrogen (N_2) makes up about 78% of the atmosphere by volume, which is more than oxygen (O_2), argon (Ar), and carbon dioxide (CO_2).
Argon is a noble gas present in smaller amounts (about 0.93%), oxygen is about 21%, and carbon dioxide is less than 0.05% under normal conditions.
Therefore, by comparing these percentages, conclude that nitrogen (N_2) is the most abundant gas in Earth's atmosphere.
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