Given the electronegativities below, which covalent single bond is most polar? element: h c n o electronegativity: 2.1 2.5 3.0 3.5

The higher difference in the electronegativity has been in the O-H bond, the most polar bond is O-H.

The polarity of the bond can be defined as the difference in electronegativity.

Electronegativity of N - Electronegativity of H

= 3 - 2.1

= 0.9

Electronegativity of O - Electronegativity of C

= 3.5 - 2.5

= 1

Electronegativity of O - Electronegativity of N

= 3.5 - 3

= 0.5

Electronegativity of C - Electronegativity of H

= 2.5 - 2.1

= 0.4

Electronegativity of O - Electronegativity of H

= 3.5 - 2.1

= 1.4

Since the higher difference in the electronegativity has been in the O-H bond, the most polar bond is O-H.

For more information about the polar bonds, refer to the link:

link

c (diamond),

sio2 (quartz)

every chemical equation adheres to the law of conservation of mass, which states that matter cannot be created or destroyed. therefore, there must be the same number of atoms of each element on each side of a chemical equation.