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I need helppppppp ..............

I need helppppppp ..............
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I need helppppppp ..............

I need helppppppp ..............-example-1
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User Hozefa
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A. Li also know as Lithium has 3 protons.
B. To find number of neutrons in a element you subtract number of protons by mass number.
C. Protons have a positive charge.
D. Electrons have a negative charge.
E. Neutrons have no charge and are neutral.
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User Bardzusny
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