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Because they are the outer electrons in an atom and they orbit around the nucleus. But you should ask a scientist this question. NOT put it on ask.com.

OR look it up on Google.com. it is very likely that you will find something there.

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14y ago

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What is the number of electrons that can be held in the frist orbit?

Two (2) electrons can be held in the first orbit.


What are the number of electrons that can be held in the first orbit?

2 electrons maximum. 1s2


How many electrons can be held in a third orbit?

The maximum number of electrons that can be held in the third orbit of an atom is 18. This is based on the formula 2n^2, where n is the principal quantum number of the orbit. For the third orbit (n=3), the maximum number of electrons is 2 x 3^2 = 18.


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Between electrons and the atomic nucleus a repulsion exist.


How many electrons held in the second orbit of oxygen?

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The orbit or electron shell closest to the nucleus is the 1s sub-shell. It can hold 2 electrons before the 2s sub-shell is filled. H and He have their electrons in this shell (the 1s)


The number of electrons that can be held in the second orbit?

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How many electrons in each orbit ring for lead?

In a lead atom, the number of electrons in each orbit are as follows: 2 electrons in the first orbit (closest to the nucleus) 8 electrons in the second orbit 18 electrons in the third orbit 32 electrons in the fourth orbit


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The number of electrons that can be held in the the third orbit.?

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Where do atoms electrons reside in?

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Why don't electrons crash into the nucleus?

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