Multiple Choice
Which statement best describes the structure of an atom?
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- 1. Intro to General Chemistry3h 48m
- Classification of Matter18m
- Physical & Chemical Changes19m
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- The Atom9m
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- Main Group Elements: Bonding Types4m
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- 24. Transition Metals and Coordination Compounds3h 16m
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- Ligands10m
- Complex Ions5m
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- Classification of Ligands11m
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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
Struggling with General Chemistry?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
Which of the following is the number of protons found in an atom of argon?
A
40
B
22
C
18
D
8
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Verified step by step guidance1
Recall that the number of protons in an atom is given by its atomic number, which is unique to each element.
Identify the element in question, which is argon in this problem.
Look up argon's atomic number on the periodic table; this number represents the number of protons in an argon atom.
Understand that the atomic number is not the same as the atomic mass (which is approximately 40 for argon), but specifically the count of protons.
Conclude that the number of protons in argon corresponds to its atomic number, which is 18.
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