it is tecnically magnesium,
A) Metal has luster
Metals are ductile, malleable, and good conductors of heat.
Add the weight of chromium, nickel and iron to get 25 pounds. Then divide the weight of chromium by the weight of the stainless steel to get 18%. Then find 18% of 25 g which is 4.5 g.
B. Unless you melt the solid the solid will hold its form