Multiple Choice
How many more neutrons are present in an isotope of carbon-14 compared to a standard carbon-12 atom?
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- 1. Intro to General Chemistry3h 48m
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2. Atoms & Elements
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Struggling with General Chemistry?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
How many protons does the isotope lithium-8 have?
A
8
B
3
C
4
D
5
Verified step by step guidance1
Recall that the number of protons in an element is defined by its atomic number, which is unique to each element.
Identify the element in question: lithium. Lithium has an atomic number of 3, meaning it has 3 protons.
Understand that the isotope number (in this case, 8 in lithium-8) represents the sum of protons and neutrons in the nucleus, not the number of protons alone.
Therefore, regardless of the isotope number, the number of protons in lithium remains constant at 3.
Conclude that lithium-8 has 3 protons.
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