Which of these structures is flat like a pancake - listed below:?

Question

Hydrogen, oxygen, nitrogen, water, hydrogen perioxide, ammonia, methane, dichloromethane, chloroethanol, carbon dioxide, acetylene, ethanol, acetic acid, benzene, iron oxide?

Answer 1

Of the ones listed, benzene is the only one that closely resembles a pancake. It is a hexagon with carbons at each of the points and with a hydrogen on each carbon all in essentially the same plane.

Others that are flat and would more closely resemble a strip of bacon are:
hydrogen, oxygen, nitrogen, water, carbon dioxide, acetylene. Note: water would look like a bent strip of bacon. The others are essentially linear. E.g. H-H, O=O ,N (triple bond) N, O=C=O (Note:CO2 would be somewhat twisted bacon strip) and H-C(triple bond)C-H.

Hope this helps ;o}

Answer 2

In order to define a plane, at least three points are needed.
So, the triatomic molecules are by default.

That would eliminate the diatomic structures.

Acetylene is linear.

Ammonia is tetrahedral.

The benzene ring is certainly flat.

Wiki the rest and *look at* the structures.

Answer 3

hydrogen, oxygen, nitrogen, water, hydrogen peroxide, carbon dioxide, benzene

Answer 4

In other words, which molecules are planar.

H2, O2, N2, H2O, H2O2, CO2, C2H2, and C6H6 are planar.

NH3, CH4, CH2Cl2, ClCH2CH2OH, CH3CH2OH, CH3CO2H, and Fe2O3 are non-planar.

Answer 5

All of them