The formula of the oxide of the third period element in the highest valence EO2. Determine this element and characterize the structure of its atom.
EO2 oxides to the highest degree can be created from the elements of group IV-a of the periodic system, because they have 4 electrons at the external energy level. By giving them away, the elements acquire an oxidation state of + 4. In the third period, this element is silicium (silicon Si).
+ 14Si 1s2 2s2 2p6 3s2 3p2
The silicon atom has three energy levels. The first contains 2s electrons, the second contains 2s and 6p electrons. At the third (external) energy level – 2s and 2p electrons. By donating electrons to the outer level, silicon can create chemical bonds, exhibiting an oxidation state of +2 or +4.
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