Question

Which substance(s) will be good conductors of electricity?

I. H2O (s)
II. NaCl (s)
III. NaCl (l)
IV. Au (s)


A) I and II only
B) III and IV only
C) II and III
D) All of them

(It's on usatestprep)

Answer 1

The Answer is B

NaCl(s) and H2O(s) would not be good conductors since they are both in solid form and do possess the mobile electrons or ions needed to conduct an electrical current.

Answer 2

the substances that will be good conductors of electricity are NaCI(s) and NaCi(l)