I think the answer is -12.7
With the principle quantum number being 2, the maximum number that can share this is 8. You can use the general formula 2n^2 to calculate this number (n=quantum level), or you can use the concept of quantum numbers (n, l, m, s) to justify this answer.
Answer:
the neutul atom has the same number of protons in its neclues as positive in its electron cloud#
Explanation:
Answer:
There are three significant figures in the number 20300
