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72 Hf Hafnium (plaintext) |
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H He |
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Li Be B C N O F Ne |
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Na Mg Al Si P S Cl Ar |
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K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr |
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Rb Sr Y Zr Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te I Xe |
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Cs Ba La[Hf]Ta W Re Os Ir Pt Au Hg Tl Pb Bi Po At Rn |
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Fr Ra Ac Rf Db Sg Bh Hs Mt Ds Rg Cn Nh Fl Mc Lv Ts Og |
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Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb Lu |
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Th Pa U Np Pu Am Cm Bk Cf Es Fm Md No Lr |
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| Hafnium | |
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| 178.49 u | |
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Wiki Article: Hafnium |
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Electron Configuration: [Xe]6s2 4f14 5d2 |
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Electronegativity: 1.3 |
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Atomic Radius: 212 pm |
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Ionization Energy: 6.825 eV |
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Electron Affinity: |
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Oxidation States: 4 |
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Standard State: Solid |
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Melting Point: 2506 K |
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Boiling Point: 4876 K |
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Density: 13.3 g/cm3 |
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Family: Transition metal |
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Year Discovered: 1923 |
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Number of Neutrons: 106 |
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Number of Protons: 72 |
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Number of Electrons: 72 |
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Number of Valence: |
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Valency: |
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Group: 4 |
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Period: 6 |
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Shell: d-shell |
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Specific Heat: 0.144 J/g K |
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Radioactive: 0 |
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Occurrence: Natural |
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Source: Dying low-mass stars |
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Source: Merging neutron stars |
