The overall tendency of an element to attract the shared pair of electrons more towards itself is known as electronegativity. Electronegativity values are essential for two reasons.
1. To predict the type of bond formation taking place in a molecule.
The electronegativity difference between two atoms determines the type of bond formed. An ionic bond forms if the electronegativity difference is greater than 1.7. On the other hand, a covalent bond forms if the electronegativity difference lies between 0.4 and 1.7.
2. To predict the polarity of the molecule
Suppose the net electronegativity difference is 0, a nonpolar bond forms. On the other hand, if the electronegativity difference is greater than 0, ionic bond formation takes place.
The electronegativity chart explains how an atom attracts electron pairs towards itself. The electronegativity values range from 0 to 4 and can be easily determined by looking at the electronegativity chart itself.
In the electronegativity chart. All elements are arranged based on their electronegativity values. The elements may also be placed in a similar order as the periodic table. However, the first method makes it easy and useful to review the electronegativity value of each element.
The electronegativity chart is mentioned below. Here, we have arranged the elements with the highest electronegativity value at the top and vice versa. A few elements like inert gases do not have electronegativity. Such elements are placed at the bottom of the electronegativity chart.
electronegativity. Such elements are placed at the bottom of the electronegativity chart.