these molecules are not attracted to polar water molecules

Polar and Non-polar Molecules - Polar Molecules When compounds are formed from elements whose atoms have different electronegativities, the electrons forming the bonds will have a tendency to be attracted closer to the more electronegative..

Oxygen is more electronegative than hydrogen, being only second to fluorine in its electronegativity. Its high electronegativity causes the oxygen atom to pull the shared pairs of electrons more towards itself. As a result, the O-H bond acquires polarity. Since the two O-H..

When diatomic molecules are formed from identical atoms, the electrons forming the bonds are shared equally between the atoms e.g.,H 2 , N 2 , O 2 , Cl 2 etc. Such molecules are termed as non-polar as there ..

Methane The shared pair is equidistant from both carbon and hydrogen atoms. Neither the carbon atom, nor the hydrogen atom can pull the shared pair towards itself as there is little difference [carbon = 2.5ev, hydrogen = 2.1ev] in their electronegativiti..

Shapes of Molecules - such as linear, triangular, square planar, pyramidal, octahedral etc. The shape of a molecule affects its chemical and physical properties. For instance, some of the unique properties of water are due to the angular shape of its molecule..

Atoms and Molecules - Formation of Molecule Atoms of most of the elements do not exist independently. They either form molecules or ions. An atom having a charge on it is called an ion. When an atom loses or gains charge, it gets converted into a positively or negative..

Two hydrogen atoms mutually share one electron each with an atom of oxygen to form a water molecule (Fig. 3.8). Note ..

A soap has two dissimilar ends. At one end is the hydrocarbon chain that is non-polar and hydrophobic (oil soluble). At the other end there is the carboxylate ion that is polar and hydrophilic (water soluble). When soap is added to water, its molecule..

A number of electrolytes dissociate in solution to give two or more particles (ions). Therefore, the number of solute particles, in solution of such substances is more than the expected value. Accordingly, such solutions exhibit higher values of colligative properties. Since the colligative propert..

An example of sharing of two pairs of electrons (Double bond). Two atoms of oxygen share two pairs of electrons to form one molecule of oxygen (Fig. 3.5). Note :..