One Faraday of charge will move one mole of electrons.
One Faraday is 96500 coulombs.
One coulomb is one amp per second. So in this case we are using 6.5 x 1397 coulombs = 9080.5 C. That is equivalent to 0.094 mol. of electrons.
In MCl3 the metal must be M3+, so it needs 3 moles of electrons to fully discharge a mole of it. Or 1/3 mol from one mol of electrons.
0.094 mol electrons produces 1.41 g
so 1 mol electrons produces 15 g
15 g is 1/3 moles. One mol is 45 g.
The metal is scandium.