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Which of the following determines the identity of an element?
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- 1. Intro to General Chemistry4h 5m
- Classification of Matter18m
- Physical & Chemical Changes19m
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- The Atom10m
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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
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- 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 Summary8m
- Magnetic Properties of Complex Ions9m
- Strong-Field vs Weak-Field Ligands6m
- Magnetic Properties of Complex Ions: Octahedral Complexes11m
2. Atoms & Elements
The Atom
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An atom has 15 protons and 14 neutrons. What is the atomic number of this atom?
A
29
B
14
C
15
D
1
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Guida verificata passo dopo passo1
Recall that the atomic number of an atom is defined as the number of protons in its nucleus.
Identify the number of protons given in the problem, which is 15.
Understand that the number of neutrons does not affect the atomic number; it only affects the isotope of the element.
Therefore, the atomic number is equal to the number of protons, which is 15.
Conclude that the atomic number of the atom is 15.
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