A SIGMA bond differs from a PI bond in that the sigma bond:
AForms by sideways overlap of p orbitals only
BForms by head-on overlap; is stronger than pi
CAlways involves d orbitals in the formation
DCannot exist between same kind of atoms
Answer & Solution
Correct answer: B. Forms by head-on overlap; is stronger than pi
SIGMA (σ): head-on axial overlap; strong; first bond between atoms. PI (π): sideways p-orbital overlap; weaker; only in addition to sigma (in double/triple bonds). C=C has 1σ + 1π.
Related questions
A student is told to name the arrangement that includes every electron pair around the cenA chemist wants to compare how tightly an ionic solid is held together. The quantity to usThat distinction matters because the arrangement counting all electron pairs and the arranWater also has four electron pairs on its central atom, but two of them are lone pairs. ItYet ammonia's measured H-N-H angle is a little under 109.5 degrees. The reason is that a lAmmonia has four electron pairs around nitrogen. Its electron-pair geometry is therefore:A central atom carries three regions of electron density and no lone pairs. The geometry aBeryllium fluoride has just two regions of electron density around the central atom. VSEPR