Which orbital is non directional?
They are non directional because they are spherical in shape and probability of finding electrons at a particular distance from the nucleus is same in all directions.
H2O has higher boiling point than HF, though HF is more polar than H2O. Explain.
Water has a higher boiling point than HF, even though HF is more polar than H2O. This is because in HF, each molecule can be hydrogen bonded to two othsrs wherease in water, each molecule can be hydrogen bonded to four others. Therefore, even though HF forms some what stronger bond than water. The total strength of two hudrogen bonds to a water molecule exceeds the total strength of two hydrogen bondsin an HF molecule.