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19 September, 21:37

Consider the two electron arrangements for neutral atoms A and B. Are atoms A and B the same element?

A - 1s2, 2s2, 2p6, 3s1

B - 1s2, 2s2, 2p6, 5s1

yes or no

+1
Answers (2)
  1. 19 September, 22:43
    0
    Technically yes but no because you have to fill the 3s orbital before the 5s orbital.
  2. 19 September, 23:32
    0
    Look at the last part of the B element, it is not the correct electron level compared to A, so therefore, ...
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