Which of the following statements concerning the attraction of ions to polar molecules is/are correct? 1. the force of attraction between an ion and a polar molecule is inversely proportional to the square of the distance between the center of the ion and the oppositely charged pole of the dipole. 2. the higher the ion charge, the stronger the attraction between the ion and a polar molecule. 3. the greater the magnitude of the dipole, the greater the attraction between the ion and a polar molecule.

1, 2 and 3 are correct.

Explanation:

The force of the attraction is calculated by Coulomb's law as:

Where,  

K is the Coulomb's constant having value 9×10⁹ N. m²/C²

are the charges on the dipole and ion respectively.

d is the distance between them.

Since F is inversely proportional to square of distance between them, so statement 1 is true.

F is directly proportional to the charge , so on increasing charge, force of attraction increases. Hence, statement 2 is true.

The greater the magnitude of the dipole means the greater the charge on dipole. Hence, statement 3 is also true.

regular repeating structure

Explanation:

Crystalline solids have an organized structure involving repeating units of a particular structural pattern known as the unit cell. This well organized structural arrangement is maintained throughout the solid. Amorphous substances do not have this well organized structural units hence they are not as strong as crystalline solids and lack a definite pattern of arrangement of particles in the solid.