객관식
Which of the following best describes the fundamental particles that make up matter?
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- 1. Intro to General Chemistry3h 58m
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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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- Ligands10m
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- Coordination Numbers & Geometry9m
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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 of the following is closest to the mass of a proton?
A
1.67 \(\times\) 10^{-27} \(\text{ kg}\)
B
1.00 \(\times\) 10^{-24} \(\text{ kg}\)
C
9.11 \(\times\) 10^{-31} \(\text{ kg}\)
D
4.18 \(\times\) 10^{-23} \(\text{ kg}\)
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검증된 단계별 안내1
Understand that the problem asks for the mass of a proton, which is a fundamental particle in chemistry and physics.
Recall that the mass of a proton is a well-known constant and is approximately \(1.67 \times 10^{-27}\) kilograms.
Compare the given options to this known value to determine which is closest.
Note that \(1.00 \times 10^{-24}\) kg is three orders of magnitude larger than the proton mass, \(9.11 \times 10^{-31}\) kg is much smaller (close to electron mass), and \(4.18 \times 10^{-23}\) kg is even larger.
Conclude that the value closest to the proton mass is \(1.67 \times 10^{-27}\) kg.
