Hi!
I have a question about Pi-Bonds:
a. ) are the only kind of bonds present in double bonds
b. ) have very little electron density along the internuclear axis
c. ) are formed by endwise overlap of p-orbits
d. ) are formed from hybrid orbitals
e. ) are formed from s-orbitals
which one of these statements is true?
I think it might be b or e. I'm not sure which of these. I may be completly off soo any help would be appreciated.
Thanks!
http://en.wikipedia.org/wiki/Pi_bond
Hi there!
You're on the right track with your choices, but let me explain a bit further to help you determine the correct answer.
Pi-bonds are formed by the overlap of p-orbitals, so statement c is correct. This type of bond occurs in double bonds, and they are in addition to the sigma bond formed by the overlap of hybridized orbitals. Therefore, statement a is incorrect because double bonds have both sigma and pi bonds.
Now let's look at the other options. Statement b states that pi-bonds have very little electron density along the internuclear axis. In reality, pi-bonds have a higher electron density outside of the internuclear axis, so statement b is incorrect.
Statement d mentions that pi-bonds are formed from hybrid orbitals. However, hybridization is primarily associated with sigma bonds, so statement d is also incorrect.
Lastly, statement e suggests that pi-bonds are formed from s-orbitals. This is not true as pi-bonds involve the overlapping of p-orbitals, not s-orbitals. Hence, statement e is also incorrect.
Therefore, the correct answer is statement c: Pi-bonds are formed by endwise overlap of p-orbitals.
I hope that clarifies everything for you! Let me know if you have any more questions.