Which conducts better, BeCl
MgCl2
In solution? or as crystals?
You must have meant BeCl2.
To determine which compound conducts better, BeCl or MgCl2, we need to consider their chemical properties.
BeCl (Beryllium chloride) is an ionic compound, consisting of a metal (beryllium) and a non-metal (chlorine). It has a 1:1 ratio of metal and non-metal ions. MgCl2 (Magnesium chloride) is also an ionic compound, but it has a 1:2 ratio of metal and non-metal ions.
When dissolved in water, ionic compounds dissociate into their constituent ions, which are responsible for conducting electricity. In solution, the cations (positively charged ions) are attracted to the cathode (positive electrode), while the anions (negatively charged ions) are attracted to the anode (negative electrode). The movement of these ions contributes to the conductivity of the solution.
As MgCl2 has a higher concentration of ions compared to BeCl, it is expected to conduct electricity more efficiently. This is because MgCl2 dissociates into two Cl- anions for every one Mg2+ cation, while BeCl dissociates into one Cl- anion for every one Be2+ cation.
So, the compound that conducts better is MgCl2.