28 - Nickel transition metal
Discovered by Axel Fredrik Cronstedt in 1751
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.
H He Li Be B C N O F Ne Na Mg Al Si P S Cl Ar K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr Rb Sr Y Zr Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te I Xe Cs Ba La Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb Lu Hf Ta W Re Os Ir Pt Au Hg Tl Pb Bi Po At Rn Fr Ra Ac Th Pa U Np Pu Am Cm Bk Cf Es Fm Md No Lr Rf Db Sg Bh Hs Mt Ds Rg Cn Nh Fl Mc Lv Ts Og
57-71 La-Lu Lanthanides
89-103 Ac-Lr Actinides
| Shell | Electrons | Orbitals |
|---|---|---|
| 1 | 2 | 2 in 1s |
| 2 | 8 | 2 in 2s + 6 in 2p |
| 3 | 16 | 2 in 3s + 6 in 3p + 8 in 3d |
| 4 | 2 | 2 in 4s |
58.7 u Atomic Mass
1.6 Å Atomic Radius
3.19k K Boiling Point
1.24 Å Covalent Radius
8.91 g/cm³ Density
112 Electron Affinity
1.91 Electronegativity
7.64 eV First Ionization Energy
1.73k K Melting Point
4 Number of Shells
28 Atomic Number
2, 8, 16, 2 Electron Shell Occupations