Question

Which molecule has a bent shape?

Answer 1

Hint : If molecules have a non-collinear arrangement of two adjacent bonds, then the resultant geometry of the molecule is bent. It is also called angular or V- shape. Water is a molecule having bent shape. There are two hydrogen atoms and one oxygen atom in one water molecule.

Complete Step By Step Answer:
Water molecule is a V-shaped molecule. Water has a bent shape resulting from tetrahedral electron pair geometry. Water is polar and it is a universal solvent. It has high heat of vaporization and also high heat of capacity. Water is less dense in solid form than in its liquid form. It has cohesive and adhesive properties. The oxygen in water molecules has six valence electrons and needs two more electrons to achieve octet configuration. Hydrogen atoms give two electrons to oxygen and help in completing octets. The structure of water molecule is given below:

Therefore, water molecules have a bent shape.

Note :
In a water molecule, two hydrogen atoms are bound to a central oxygen atom by a pair of electrons that are shared between them. Two electrons out of six outer shell electrons of oxygen are used for this purpose, leaving behind four electrons into two nonbonding pairs. The water molecule is expected to have tetrahedral geometry in which the angle between electron pairs is ${104^ \circ }$. But, because of the two nonbonding electron pairs on oxygen atoms, these undergo strong repulsion. Due to this reason, the shape of the water molecule is bent.