Nickel has FeC strucfure, has electronegatwity of 1.8 and lts atomic mdus is 0125 nm. Copper abo has Fec structure and has electronegativity of 1.9 buh is atomic radis is 0.128nm Mort common valenee is 1+ lor copper ( Glthough sometimes it is found at 2+ land 2+ for nickel. Nikkel and copper will form: Nore of thit + tone Asubututional meld xeltion of complete selubity Intermethils compturd An atersitul sold solut bit