cesararroyo52 cesararroyo52
  • 04-03-2016
  • Physics
contestada

A lithium atom has three protons, three neutrons, and three electrons. What is the overall charge on this atom?

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olemakpadu
olemakpadu olemakpadu
  • 04-03-2016
The charge has got to do with the electrons and protons.

3 electrons and 3 protons.

charge =  -3 + 3 = 0

Overall charge is zero. It is neutral. The electrons and protons are equal.
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AL2006
AL2006 AL2006
  • 04-03-2016
In adding up charges, you can ignore the neutrons ... they have no charge
either way.  They're NEUTRal, which is why they're called NEUTRons.

That leaves us with 3 positive protons and 3 negative electrons.

                       +3  -3  =  0 .

The atom as a whole is neutral ... its net charge is zero.
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