Answer:
Zero with the subscripts, +2 without them.
Explanation:
Hello!
In this case, since we consider that two silicon are bonded with four oxygen atoms to form silicon oxide according to the following chemical equation:
[tex]Si^{4+}+O^{2-}\rightarrow Si_2O_4[/tex]
It is also possible to realize it can be simplified to obtain:
[tex]SiO_2[/tex]
Which means that the total charge with the subscripts is zero, and without the subscripts +2 (+4-2).
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