# Does hydrogen bonding affect the structure of a molecule?

We know an individual molecule of $$\ce{H2O}$$ has a bent structure, but if we consider a volume of water, then there are many molecules having hydrogen bonding with each other. Due to this, does the structure of a single molecule, on average, deviate from bent? How severe are the deviations?

I took water as a simple example, but I mean my question can be considered more generally for other compounds as well.

This question is mainly inspired by the following question from the (2014) JEE advanced paper:

The correct statement(s) for orthoboric acid is/are (Multi correct)

(a) It behaves as a weak acid in water due to self ionisation

(b) Acidity of its aqueous solution increases upon addition of ethylene glycol

(c) It has a three-dimensional structure due to hydrogen bonding

(d) It is a weak electrolyte in water