QQuestionChemistry
QuestionChemistry
How many neutrons does the isotope of Lithium have?
A. 8
B. 4
C. 3
D. 5
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Answer
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Step 1:Let's solve this step by step:
Step 2:: Identify the key information about Lithium
- Lithium's atomic number is 3 - This means Lithium has 3 protons in its nucleus
Step 3:: Determine the isotope
- The problem doesn't specify a specific isotope, so we'll consider the most common isotope of Lithium
Step 4:: Calculate the number of neutrons
- $$7 - 3 = 4$$ neutrons
- To find the number of neutrons, we need to know the mass number - Mass number = 7 - Number of neutrons = Mass number - Number of protons
Step 5:: Verify the calculation
- Protons: 3 - Neutrons: 4 - Total nucleons: 7 ✓
Final Answer
Key Insights: - Number of neutrons = Mass number - Atomic number - For \sp{7}{Li}, the neutron count is 4 - Always check the mass number and atomic number when determining neutron count
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