The electronic formula for the external energy level 2s2 2p4 corresponds to an atom.
| March 10, 2021 | education
As already noted, we are given an electronic formula for the EXTERNAL energy level. If we count, we get 6 electrons, and this element has only 2 energy levels. This tells us that this element is in the sixth group and in the second period of the periodic table of chemical elements of D.I. Mendeleev. And that’s oxygen.
Full electronic formula for it:
1s2 2s2 2p4.
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