A covalent bond is most likely to be polar when there is a large difference in the electronegativity of the two atoms that form the bond.
Molecules can be polar or non-polar; bonds are what hold molecules together, but they are not in themselves polar or non-polar. I should point out that the most famous polar molecule in the world, the water molecule, does have covalent bonds.
A polar covalent bond is a bond between two nonmetal atoms with different electronegativity's. Technically, only a bond between identical nonmetal atoms would be truly nonpolar, but in most cases a threshold is set for electronegativity difference to be considered polar.
In a polar covalent bond, they spend more time closer to the more electronegative atom. In a non polar bond the spend their time mainly between the atoms showing no "favouritism"
covalent bonds
A covalent bond. A polar covalent bond when the sharing is not equal due to the difference in electronegativity. Water is polar covalent because oxygen is more electronegative than hydrogen, so the electrons spend more time in the orbital region around the oxygen. This fives a slightly negative charge to the oxygen end and a slightly positive charge to the hydrogen end in this neutral molecule.
A covalent bond. Non-polar covalent is stronger than polar covalent as well.
a non-polar covalent bond
A good candidate would be the bond in HF.
Molecules can be polar or non-polar; bonds are what hold molecules together, but they are not in themselves polar or non-polar. I should point out that the most famous polar molecule in the world, the water molecule, does have covalent bonds.
Electronegativity Difference HF = 1.9 = ionic bond HC = 0.4 = nonpolar covalent HH = 0 = nonpolar covalent HN = 0.9 = polar covalent HN is the more polar bond. HF is not polar covalent, it is ionic.
A polar covalent bond is a bond between two nonmetal atoms with different electronegativity's. Technically, only a bond between identical nonmetal atoms would be truly nonpolar, but in most cases a threshold is set for electronegativity difference to be considered polar.
A covalent (polar or non-polar) bond is formed
No, they are both halogens and nonmetals with a electronegativity too close together to form an ionic bond. They, if ever bonded, would form a covalent, or polar covalent bond.
In a polar covalent bond, they spend more time closer to the more electronegative atom. In a non polar bond the spend their time mainly between the atoms showing no "favouritism"
covalent bonds
A covalent bond. A polar covalent bond when the sharing is not equal due to the difference in electronegativity. Water is polar covalent because oxygen is more electronegative than hydrogen, so the electrons spend more time in the orbital region around the oxygen. This fives a slightly negative charge to the oxygen end and a slightly positive charge to the hydrogen end in this neutral molecule.
Me and your mum because we share a bond.