Lithium has 3 protons. how many neutrons are in the isotope lithium-8?
2 answers:
Answer:
Number of neutrons=5
Step-by-step explanation:
We are given that
Number of protons in lithium=Z=3
Mass number of lithium=A=8
We have to find the neutrons in the isotope lithium-8.
We know that
Number of neutrons=A-Z
Where A= Mass number
Z= Number of protons=Atomic number
Substitute the values then we get
Number of neutrons=8-3=5
Answer : 5
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