'5', '3', 2, 1, -3
|oxidation states comment=弱酸性酸化物
|electronegativity=2.18
|number of ionization energies=4
|1st ionization energy=947.0
|2nd ionization energy=1798
|3rd ionization energy=2735
|atomic radius=1 E-10 m|119
|covalent radius=1 E-10 m|119 ± 4
|Van der Waals radius=1 E-10 m|185
|magnetic ordering=反磁性
|electrical resistivity=
|electrical resistivity at 0=
|electrical resistivity at 20=333 n
|thermal conductivity=50.2
|thermal conductivity 2=
|thermal diffusivity=
|thermal expansion=
|thermal expansion at 25=
|speed of sound=
|speed of sound rod at 20=
|speed of sound rod at r.t.=
|Young's modulus=8
|Shear modulus=
|Bulk modulus=22
|Poisson ratio=
|Mohs hardness=3.5
|Vickers hardness=
|Brinell hardness=1440
|CAS number=7440-38-2
|isotopes=
|isotopes comment...