Multiple Choice
How many neutrons does a typical sodium atom have?
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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- 24. Transition Metals and Coordination Compounds3h 16m
- Atomic Radius & Density of Transition Metals11m
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- Ligands10m
- Complex Ions5m
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- Classification of Ligands11m
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- Isomerism in Coordination Complexes14m
- 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
Isotopes
Struggling with General Chemistry?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
An isotope of sodium (Na) has a mass number of 22. How many neutrons does it have?
A
12
B
13
C
11
D
10
Verified step by step guidance1
Identify the mass number of the sodium isotope, which is given as 22.
Recall that the mass number of an isotope is the sum of its protons and neutrons.
Determine the atomic number of sodium (Na) from the periodic table, which is 11. This represents the number of protons in the sodium atom.
Use the formula: \( \text{Number of neutrons} = \text{Mass number} - \text{Atomic number} \).
Substitute the known values into the formula: \( \text{Number of neutrons} = 22 - 11 \).
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