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An electron and a proton are fixed at a separation distance of 1.0 nm. What is the magnitude of the electrostatic force between them?
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- 1. Intro to General Chemistry4h 5m
- Classification of Matter18m
- Physical & Chemical Changes19m
- Chemical Properties7m
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- 2. Atoms & Elements4h 40m
- The Atom10m
- Subatomic Particles17m
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- Periodic Table: Classifications15m
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- Naming Alkanes4m
- The Alkyl Groups9m
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- Alkane Reactions7m
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- 23. Chemistry of the Nonmetals2h 39m
- Main Group Elements: Bonding Types4m
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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
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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
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- Isomerism in Coordination Complexes17m
- Orientations of D Orbitals4m
- Intro to Crystal Field Theory10m
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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
Scelta multipla
Which of the following is the atomic number of boron?
A
13
B
5
C
11
D
6
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Guida verificata passo dopo passo1
Recall that the atomic number of an element is the number of protons in the nucleus of an atom of that element.
Identify boron on the periodic table to find its atomic number.
Note that boron is located in period 2 and group 13 of the periodic table.
The atomic number corresponds to the position of the element in the periodic table, which for boron is 5.
Therefore, the atomic number of boron is 5, meaning it has 5 protons in its nucleus.
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