Both CO₂ and SiO₂ Appear to Have Valid Lewis Structures

question 20

Multiple Choice

Both CO₂ and SiO₂ appear to have valid Lewis structures.Using the molecular orbital model,why then are CO₂ molecules stable and SiO₂ molecules not stable?

• A)CO₂ is able to form sigma bonds and SiO₂ is not.
• B)The silicon 3p valence orbitals do not overlap very effectively with the smaller oxygen 2p orbitals.
• C)The carbon atom is larger than the silicon atom,giving carbon a higher electron density and thus better pi bonding.
• D)Silicon prefers to bond to other silicon atoms over oxygen atoms.
• E)At least two of the above are correct.

---

Definitions:

Press And Hold

An interaction technique involving pressing and holding down a button or screen area for a specified duration to invoke a secondary action.

Gesture

A physical movement of a part of the body, especially a hand or the head, to express an idea or meaning.

Activate

To turn on or start a program, feature, or device, making it ready for use.

Windows Marketplace

A digital distribution platform by Microsoft for apps, games, and other content for Windows devices.