What are the atoms in a polar covalent bond?

Answer 1

There are too many combinations of atoms to list as polar covalent. To help you out:

Molecular bonds can be classified in different ways depending on the attractions between electrons and nuclei.

Ionic bonds, polar covalent bonds, and covalent bonds are all related to the difference in electronegativity of the atoms bonding together.

Electronegativity is how strongly an atom will attract one or more electrons forming an octet. Search for an electronegativity chart in a reference book or on the internet to see the relative values assigned to each of the elements on the Periodic Table (results may vary since there are multiple methods to measure electronegativity).

Bonded atoms with a difference in electronegativity of 0.5 have bonds considered "non-polar covalent" or "covalent". Those with a difference somewhere between 0.5 and 2.0 are considered polar covalent. Those with a difference in electronegativity greater than 2.0 are considered ionic.

For example, the difference in electronegativity between sodium (0.9) and chloride

(3.0) is 3 - 0.9 = 2.1

2.1 > 2.0 and it thus considered an ionic bond.

Answer 2

Any two of the elements found on the right side of the periodic table of elements. The non-metal elements.

Answer 3

Non-metals when reacted together.

Answer 4

Two carbon atoms

Answer 5

H and br