✔ 最佳答案
好似關pi bond事, SiO2 是single bond, CO2 是double bond
double bond 的pi bond (第二個) 是side way overlap
Si 個valence electron shell 大, side way overlap 不effective
single bond 是sigma bond
SiO double bond弱, prefer single bond多D
CO double bond好強, 相比於CO single bond
http://www.wiredchemist.com/chemistry/data/bond_energies_leng
http://en.wikipedia.org/wiki/Pi_bond
不過我D野比返老師
有錯請指正