CHEMISTRY HELP!

Chemistry

1 answer:

Nostrana [21]2 years ago

4 0

Answer:

Explanation:

Arsenic is in the same group as Nitrogen - group 5. They all have 5 valence electrons in their outermost shell. To achieve its most stable state - 8 valence electrons (octet rule - elements are most stable when the entire shell is filled) - arsenic needs to gain 3 electrons. Since electrons have a negative charge, the charge of an As ion would be -3.

Try observing the periodic table and how many valence electrons that each element has. From there, you can determine the charges of the elements lithium and strontium. You can guess, I'll help you with those once you attempt to find the charge of those ions.

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1. In general, the nucleus of a small atom is stable. Therefore, over very short distances, such as those in a small nucleus,

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<h3>1. Answer;</h3>

a. the strong nuclear force is much greater than the electric force.

<h3>Explanation;</h3>

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<h3>9. Answer;</h3>

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<h3> Explanation;</h3>

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Uranium-238 is an example of such atom, which may undergo decay to achieve stability.
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