can't read?
Nickel is a chemical element with symbol Ni and atomic number 28. It is a silvery-white lustrous metal with a slight golden tinge. Nickel belongs to the transition metals and is hard and ductile.
Nickel nanoparticles can be prepared from the thermal decomposition of nickel(II) acetylacetonate in alkylamines and characterized by transmission electron microscopy, magnetic measurement and powder x-ray diffraction.