A substance that has a melting point of 1,074 K conduts electricity when dissolved in water,?

Question

but does not conduct electricity in the solid phase. The substance is most likely

A. a metallic solid

B. an ionic solid

C. a molecular solid

D. a network solid

Answer 1

Yes, B is the correct answer

Metals do not "dissolve" in water. Those that react form solutions, not of the metal itself, but of its hydroxide.

A few molecular solids, such as anhydrous aluminum chloride, will form ionic solutions that conduct electricity, but these are borderline cases in any event. (Ammonia is another example, but it is not solid at room temperature. Diphosphorus pentoxide is a third.)

A network solid cannot be dissolved. It can be swollen by solvents, but it will remain a solid. Those few that conduct electricity at all are those which, like graphite, contain conjugated unsaturation or, like doped silicon, contain pockets of extra electrons and electron-deficient holes.

Answer 2

http://en.wikipedia.org/wiki/Nacl
ionic solid. salt to be more specific. it has a melting point of 801c which converts to 1024k when you add 273. NaCl is an ionic solid that dissolves in water.

Answer 3

Ionic solids fit these criteria.