Which of the following is soluble in organic solvents like ethanol ?

Options

A. LiCI
B. NaCI
C. KCI
D. RbCI

Answer

A

Explanation

When a cation approaches an anion, the `e^(-)` cloud of the anion is attracted towards the cation and gets distorted. This effect is called polarization. The greater the polarization, the more the concentration of electrons between the two atoms, the lesser the ionic character while the greater the covalent character.
The smaller the cation (for a given anion), the greater is its polarizing power and, hence, the larger is the covalent character. Thus, the covalent character decreases as the size of the cation increases :
`LiCI gt NaCI gt KCI gt RbCI gt CsCI`
Thus, LiCI with maximum covalent character is soluble in ethanol, acetone, and ethy I accetate. It is also soluble in pyri-dine.