Which of the following is not true about covalent compounds?
a.
they are made of molecules and can be gases, liquids, or solids.
b.
they have low melting and boiling points.
c.
they are good electrical conductors in all phases.
d.
many are soluble in nonpolar liquids but not in water.

the correct answer is b. a strong acid completely dissociates to its ions when dissolved in water. completely dissociates to and ions. a is incorrect because does not fully ionize to and ions and some remain as the compound . c and d are incorrect because, and do not fall into the category of bronsted lowry acids. a bronsted lowry acid is a proton donor and since both molecules do not have a proton to donate they are not bronsted lowry acids. likewise,   if we use the lewis acid definition, they cannot be acids. a lewis acid is an electron pair acceptor. both and have a complete octet so can not accept any electrons which disqualifies them as acids.