Which of these bonds should be classified as a polar covalent bond

Three bonds that can be classified as polar covalent bonds are:

S — O bond in SO₂Mg — Br bond in MgBr₂C — Cl bond in CCl₄

Explanation:

To classify a bond as polar covalent, the difference in the electronetativities (EN) of the atoms tha form the bond with must be greater than 0.5 and smaller than 1.7 - 1.8 .

Since your question is missing the bonds that you want to classify as polar covalent, I will show you how to do it with a set of bonds that are used in a similar question (which can be found in the internet).

a) H — S bond in H₂S

b) S — O bond in SO₂

c) Mg — Br bond in MgBr₂

d) N — O bond in NO₂

e) C — Cl bond in CCl₄

Covalent bonds are formed by electron sharing between two elements, when their electronegativities do not differe in more than (about) 1.7 in the Pauling scale. If the difference in the electronegativities of the two atoms that form the bond is larger than 1.7 the bond will be more ionic than covalent.

Also, to tell that a covalent bond is polar, the difference in electronegativities of the atoms must be larger than (about) 0.5 in the Pauling scale.

Then, to classify the bonds find the electronegativiities of the atoms that form each bond and classify them as polar covalent is the difference is between 0.5 and 1.7.

a) H — S bond in H₂S

Atom    EN

H           2.20

S            2.58

Difference: 2.58 - 2.20 = 038 ⇒ covalent, nonpolar

b) S — O bond in SO₂

Atom     EN

S            2.58

O           3.44

Difference: 3.44 - 2.58 = 0.86 ⇒ polar covalent

c) Mg — Br bond in MgBr₂

Atom      EN

Mg          1.31

Br           2.96

Difference: 2.96 - 1.31 = 1.65 ⇒ polar covalent

d) N — O bond in NO₂

Atom    EN

N           3.04

O           3.44

Difference: 3.44 - 3.04 = 0.40 ⇒ covalent, nonpolar

e) C — Cl bond in CCl₄

Atom     EN

C            2.55

Cl           3.16

Difference: 3.16 - 2.55 = 0.61 ⇒ polar covalent.

The answer to this question is a

1. why does the same side of the moon always face earthc.the rotational period of the moon is equal to one revolution around earth2. which is greater the moons period of rotation or its period of revolution  b.the moons revolution period around earth3.what was the major accomplishment of the apollo missions  d.landing on and exploring the moon4. which of these space missions involved the deployment of lunar rovers d.apollo5. which scientists are going to explore next on kepler-186fd. evidence of existence of life6.which mission is not going to explore the outside of the solar systemb.safir7.which technology limit the future of space exploration b. scientist must first develop certain technologies before missions can be completed.