Multiple Choice
Which term represents the sum of the atomic masses of the atoms in a molecule?
Table of contents
- 1. Intro to General Chemistry3h 48m
- Classification of Matter18m
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- 23. Chemistry of the Nonmetals2h 39m
- Main Group Elements: Bonding Types4m
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- Noble Gas Compounds3m
- 24. Transition Metals and Coordination Compounds3h 16m
- Atomic Radius & Density of Transition Metals11m
- Electron Configurations of Transition Metals7m
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- Ligands10m
- Complex Ions5m
- Coordination Complexes7m
- Classification of Ligands11m
- Coordination Numbers & Geometry9m
- Naming Coordination Compounds22m
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- Isomerism in Coordination Complexes14m
- Orientations of D Orbitals4m
- Intro to Crystal Field Theory10m
- Crystal Field Theory: Octahedral Complexes5m
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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
Atomic Mass
Struggling with General Chemistry?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
An atom of lithium has 3 protons and 4 neutrons. What is the atomic mass of this lithium atom?
A
10 amu
B
7 amu
C
4 amu
D
3 amu
Verified step by step guidance1
Understand that the atomic mass of an atom is the sum of the number of protons and neutrons in its nucleus.
Identify the number of protons in the lithium atom, which is given as 3.
Identify the number of neutrons in the lithium atom, which is given as 4.
Add the number of protons and neutrons together to find the atomic mass: 3 (protons) + 4 (neutrons).
The atomic mass of the lithium atom is the sum calculated in the previous step, expressed in atomic mass units (amu).
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