Answer: Chemical bonds between two elements become stronger as the electronegativity differences across the bond increases .
Step-by-step explanation: The degree to which an atom attracts electrons in a chemical bond is described by electronegativity .
If the difference in electronegativity across bond is greater than 1.7 , the character of the bond will be ionic .
If the difference in electronegativity is between 0.4 and 1.7 , the character of the bond is polar covalent .
Elements that have high electronegativity , will form a bond with any atom that has more ionic character .
In covalent bonds , electronegativity difference affect the degree of sharing . More equal the sharing stronger is the bond .eg- H2 molecule .