Drawing the Lewis Structure for BeH2Viewing Notes:
Transcript: Hi, this is Dr. B. Let's do the Lewis structure for BeH2. On the periodic table, Beryllium has 2 valence electrons and Hydrogen has 1, but we have 2 Hydrogens, so we have a total of 4 valence electrons. Put Beryllium here, and Hydrogen will go on the outside. So we've got 4 valence electrons. We'll put 2 between atoms to form chemical bonds: 2, 4. Actually, we've used all our valence electrons at this point. Let's check and see if we have full outer shells. Hydrogen only needs 2, so both of those Hydrogens are fine. Beryllium has 4, but Beryllium is an exception: it doesn't necessarily need 8 valence electrons. So with that, we've done the Lewis structure for BeH2. This is Dr. B., and thanks for watching. |
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