Question

Determine the oxidation number of the element that is underlined within the compound. Li2 SiO3

+2
+4
-2
-4

Answer 1

Determine the oxidation number of the element that is underlined within the compound.
Li2SiO3
Si= +4

Answer 2

You forgot to underline the element.

I can give you the oxidation number for the three elements

Li: +1 (this is the only oxidation number for this element)

O: -2 (this is the only oxidation number when it is not forming a peroxide)

Then: Oxidation number of Si is calculated from X +2(+1) + 3(-2) = 0

x +2 - 6 = 0

x = 6 - 2

x = 4

The oxidation number of Si is +4.