I know that the more polar the bond between the H and A (if HA is an acid) is, the stronger the acid will be.
what does it mean for a bond to be polar?
is a bond more polar if it is more electronegative?
how are bonds polar and how are bonds nonpolar?
what is the difference between polar bonds and nonpolar bonds?
Look at the electronegativity EN). The only strictly non-polar bonds, and some might argue that even these are not 100% polar, are diatomic or triatomic molecules such as H2, N2, O3, O2, etc. If there is a difference in EN, you know the bond is polar to some degree. Books differ on what is called a 50% covalent/50% ionic bond but the general rule is that about 1.8 or 1.9 difference is a 50/50 bond. Most of the time we call those with a difference larger than 1.8 (more ionic than covalent) ionic and those with less than 1.8 (more covalent than ionic) covalent. Something in the order of 1.0 difference is about 25% ionic/75% covalent. Most personal note book sized periodic charts have a polarity scale graphed. At least mine does. A bond is polar if there is a dipole moment. I hope this helps clear things up.
A bond is polar when there is an unequal sharing of electrons between two atoms in a molecule. This unequal sharing occurs when one atom has a higher electronegativity (a measure of its ability to attract electrons) than the other atom. The atom with higher electronegativity pulls the shared electrons closer to itself, resulting in a partial negative charge (δ-) on that atom and a partial positive charge (δ+) on the other atom.
Yes, a bond becomes more polar if it is more electronegative. Electronegativity increases as you move from left to right across the periodic table and decreases as you move down a group. Therefore, the higher the electronegativity difference between two atoms, the more polar their bond will be.
Bonds can be either polar or nonpolar. In a polar bond, the difference in electronegativity between the two atoms creates a dipole moment, which means there is a separation of charge within the bond. The more electronegative atom becomes the negative end, and the less electronegative atom becomes the positive end of the bond.
On the other hand, nonpolar bonds occur when there is an equal sharing of electrons between the atoms in a molecule. This usually happens when the atoms involved have similar electronegativities. In nonpolar bonds, there is no separation of charge, and the electrons are shared equally.
In summary, the difference between polar and nonpolar bonds lies in the unequal or equal sharing of electrons, respectively. Polar bonds occur when there is a difference in electronegativity between the atoms involved, resulting in a dipole moment, while nonpolar bonds occur when the atoms have similar electronegativities and share electrons equally.