All the elements in period 3 have this characteristic
2 answers:
Answer:
The answer would be C). All of the elements inside a period will always have the same amount of shells. Hope this helps!
3 neutrons 3 protons 3 atomic acid
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Answer:
Because it keeps track of all the elements
I believe it is D. Hope this helps you!
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Gravity
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I just took the test and got it right
