Question

Which one of the following pair has the same number of ions?

Answer 1

Which one of the following pair has the same number of ions?

(c)1/2 mole of NaCl and 1/3 mole of MgCl3

Hope this helps!

Answer 2

Hahahaaaa none of the above but IF (c) is
 
1/2 mole of NaCl and 1/3 mole of MgCl2 instead,

then C is the right ans :)