Width of a water molecule

Answer 1

The diameter is about 0.29 nm. The atomic diameter can be determined from interpolation of the effective ionic radii of the isoelectronic ions (from crystal data) of O2- (2.80 Å), OH- (2.74 Å) and H3O+ (2.76 Å). Coincidentally, this diameter is similar to the length of a hydrogen bond. The water molecule (bond length 0.96 Å) is smaller than ammonia (bond length 1.01 Å) or methane (bond length 1.09 Å), with only H2 (bond length 0.74 Å) and HF (bond length 0.92 Å) being smaller molecules. Answer from Esteban Broitman, September 7 2008.

Answer 2

Going by the ol' rule of the nano-thumb, there are six water molecules end to end in a nanometer, which is one billionth of a meter. An angstrom is 1/10 of a nanometer. A picometer is 1/1000th of a nanometer. So a single water molecule would be:

1/6th of one billionth of a meter

1.67 angstroms

167 picometers (167 trillionths of a meter)

Or 167 x 10 -12 meters (that's 167 times 10 to the minus 12 meters)

Answer 3

140 Picometer lengthwise

one picometer equals one trillionth (1/1,000,000,000,000) of a metre.

Answer 4

The height of an adsorbed monolayer of water, about 2.5 Angstroms or 2.5*10^-10 meters, is the width of a water molecule.

Answer 5

The molecular diameter of water is 2,75 angstroms.

Answer 6

The width of a water molecule is approximately 0.275 nanometers.

Answer 7

About 3x10-10m

Answer 8

0.278 nm

Answer 9

3a