Valence Bond Theory

Heitler and London introduced which theory?

• VSEPR Theory

• Valence Bond Theory

• Molecular Orbital Theory

• Covalent Theory

Choose all the old attractive force(s) (ie. when atoms are isolated)

• N_A - E_A

• N_{A -} N_B

• N_B - E_B

• N_B - E_A

• N_{A -} E_B

Choose all the new repulsive force(s) (ie. when atoms come together)

• N_A - E_A

• N_{A -} N_B

• N_B - E_B

• E_A - E_B

• N_{A -} E_B

Choose all the new attractive force(s) (ie. when atoms come together)

• N_A - E_A

• N_{A -} N_B

• N_B - E_A

• E_A - E_B

• N_{A -} E_B

Energy released during bond formation is called

• Bond Creation Energy

• Disassociation Energy

• Binding Energy of Molecules

• Bond Enthalpy

Tags

NGSS.HS-PS1-4

Greater the overlap of the orbitals, _________________________

• lesser the bond strength

• greater the bond strength

• bond strength remains the same

• no bond formation

Choose all possible overlaps

• positive overlap

• rational overlap

• negative overlap

• integer overlap

• zero overlap

Which is the stronger bond?

•  $\sigma\ Bond$

   

•  $\pi\ Bond$  

Tags

NGSS.HS-PS1-4

s-s overlap is a _______

•  $\sigma\ Bond$

   

•  $\pi\ Bond$  

px - px overlap (perpendicular to internuclear axis) is a _______

•  $\sigma\ Bond$

   

•  $\pi\ Bond$