Designate the positive and negative values of the colvalent bonds Si-C and Si-O. Justify your answer.

Answer 1

Electronegativty values (EN)
Si = 1.90
O = 3.44
C = 2.55
Si is more positive (less EN) than O and Si is more positive than C: therefore, in SiC the Si is + and C is negative.
In SiO the Si is + and O is negative.