Which metals are not malleable or ductile?
Brittle metals are mostly those with a close packed hexagonal crystal structure(such as Sn, Be Zn,Cd,Ti.Zr,Ga,Mg).Then Cr, alpha Uranium,alpha Pu.(alpha meaning the room temperature form of the metal)Osmium,W,Mo …The list goes on and on and includes metal with complicated structures like the semi metals Bismuth,antimony and arsenic.