Question

shape of molecule is decided by a- pi bonds b-sigma bonds c-both sigma and pi d-neither sigma and pi

Answer 1

$\huge\bold\star\purple{Answer}$

The reason that σ bonds ( and lone pairs) determine the geometry is that they form the basic skeleton of the molecule, σ bonds are formed by head-on overlap of atomic orbitals, meaning that they are oriented a long the imaginery axis connecting two atomic nuclei, and hence concentrate electron density in the region directly between the nuclei, π bonds, on the other hand, are essentially orthogonal to the σ bond skeleton, and are substantially weaker. Moreover, π bonds do not exist in isolation, meaning any π bond between two given atoms is always formed secondarily to the σ bond between said atoms. As such, π bonds do not alter the basic idealized geometry of a molecule as dictated by σ bonding......☺

Answer 2

Answer:

The correct answer is C.

Explanation:

Its is because both the sigma and Pi-bond determine the the shape of molecule(VSEPR Theory).