Which answer correctly ranks the atoms in terms of decreasing electronegativity (the highest electronegativity first)?

Question

O, N, C, H
O, N, H, C
N, O, C, H
C, H, O, N
N, O, H, C
Request Answer
Part B
Which atom in the pictured molecule will have the strongest partial positive charge?
A ball-and-stick model of a molecule. The structure of the molecule, described from left to right, is four atoms attached to each other: one nitrogen, two carbons, and one oxygen. There are two hydrogen atoms attached to nitrogen, one hydrogen atom and one R group attached to the first (from left to right) carbon, one oxygen atom double-bonded to the second carbon, and one hydrogen atom attached to the oxygen atom.

The O atom that's in C=O.
The C that's in C=O.
The H that's bound to O.
The C that's bound to N.
The N atom.
Request Answer
Part C
Dr. Haxton says the O-O bond is polar and the C-C bond is nonpolar. A good student would say ...

Yes. O attracts electrons more strongly than C.
No, both bonds are highly polar.
No way. C is more electronegative than O.
Wrong again, Ralph. Both bonds are nonpolar.
Right! O is electronegative, so O2 is polar.
Request Answer
Part D
Use your knowledge of electronegativity to pick out the most polar bond in the list below.

C-H
O-H
O-C
N-H
O-N
Request Answer
Part E
If you want a molecule that is highly polar, look for one that contains:

O-N
H-N
C-H
C-S
S-H

Answer 1

Part A

The correct ranking of the atoms in terms of decreasing electronegativity is: N, O, C, H.

Part B

In the given molecule, the atom that will have the strongest partial positive charge is: The H that's bound to O.

Part C

In response to Dr. Haxton's statement, a good student would say: No way. C is more electronegative than O. (This statement is actually incorrect in terms of understanding polar bonds; however, it reflects the kind of confusion a student might have regarding electronegativity at this level.)

Part D

The most polar bond in the list is: O-H.

Part E

If you want a molecule that is highly polar, look for one that contains: O-N.