How would I draw the atom Lithium in it's ground and excited state following a Bohr model?

I just need to know how to get there... :)

Question

How would I draw the atom Lithium in it's ground and excited state following a Bohr model?

I just need to know how to get there... :)

lukecrayonz · Answer

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anonymous · Answer

I need to know how you actually got there. :/

unklerhaukus · Answer

well Lithuim has 3 protons and four neurons
and an electronic structure of $$ 1s^2 2s^1$$

anonymous · Answer

Can you please explain what your structure stands for?

lukecrayonz · Answer

Electron configuration, 1s^2 2s^1.

unklerhaukus · Answer

well the $$1s^2$$ part
is just saying that there are 2 electrons in the inner shell, the 's' orbital is spherical
the next shell is 2s which is also spherical and has 1 electron

anonymous · Answer

What I'm really confused about is how the diagram showed only 3 electrons when the PT says 7. I'm sure I'm missing something here. :/

unklerhaukus · Answer

no the periodic table say there are 7 nucleon, (that is neutrons and protons)
only the protons have charge, and need to be balanced by electrons

anonymous · Answer

The periodic Table simple states that Li is the 3rd element, but it has a mass of 7. which ties in with what UnkleR is saying.

anonymous · Answer

Oh, I get it! I was just reading it wrong. Ok then, one more question: How would I be able to find out how many electrons an atom has in it's "excited form"? :)

unklerhaukus · Answer

well if the atom is excited , it has more energy, this could mean one of the electrons is is a higher orbital that the ground state,

anonymous · Answer

Ok then, thank you VERY much for clearing that up. :)