"Americium" pán-pún chi-kan bô-kāng--ê tē-hng
刪去的內容 新增的內容
'''Americium''' sī 1 ê hoà-ha̍k goân-sò͘. I ê goân-chú-hoan sī 95, hoà-ha̍k hû-hō sī Am. "Americium" sī ēng Bí-chiu ê Eng-bûn mi... ê ia̍h í-keng kiàn-li̍p |
無編輯摘要 |
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Tē 1 chōa:
{{Infobox element
|name=americium
|number=95
|symbol=Am
|left=[[plutonium]]
|right=[[curium]]
|above=[[Europium|Eu]]
|below=(Uqs)
|series=actinium-hē
|series comment=
|group=3
|period=7
|block=f
|series color=
|appearance=silvery white
|image name=americium microscope.jpg
|image name comment=
|image name 2=Americium spectrum visible.png
|image name 2 comment=[[Spectral lines]] of americium
|atomic mass=(243)
|atomic mass 2=
|atomic mass comment=
|electron configuration=[[[radon|Rn]]] 5f<sup>7</sup> 7s<sup>2</sup>
|electrons per shell=2, 8, 18, 32, 25, 8, 2
|color=
|phase=kò͘-thé
|phase comment=
|density gplstp=
|density gpcm3nrt=12
|density gpcm3mp=
|melting point K=1449
|melting point C=1176
|melting point F=2149
|boiling point K=2880
|boiling point comment=''(calculated)''
|boiling point C=2607
|boiling point F=4725
|triple point K=
|triple point kPa=
|critical point K=
|critical point MPa=
|heat fusion=14.39
|heat vaporization=
|heat capacity=62.7
|vapor pressure 1=1239
|vapor pressure 10=1356
|vapor pressure 100=
|vapor pressure 1 k=
|vapor pressure 10 k=
|vapor pressure 100 k=
|vapor pressure comment=
|crystal structure=double hexagonal close packed
|oxidation states=8, 7, 6, 5, 4, '''3''', 2
|oxidation states comment=(an [[amphoterism|amphoteric]] oxide)
|electronegativity=1.3
|number of ionization energies=1
|ionization energy 1=578
|atomic radius=173
|covalent radius=180±6
|Van der Waals radius=
|magnetic ordering=paramagnetic
|electrical resistivity=0.69
|electrical resistivity ref=<ref name=res>{{cite journal|last1=Muller|first1=W.|last2=Schenkel|first2=R.|last3=Schmidt|first3=H. E.|last4=Spirlet|first4=J. C.|last5=McElroy|first5=D. L.|last6=Hall|first6=R. O. A.|last7=Mortimer|first7=M. J.|title=The electrical resistivity and specific heat of americium metal|journal=Journal of Low Temperature Physics|volume=30|pages=561|year=1978|doi=10.1007/BF00116197|issue=5–6|bibcode=1978JLTP...30..561M }}</ref>
|electrical resistivity unit prefix=µ
|electrical resistivity at 0=
|electrical resistivity at 20=
|thermal conductivity=10
|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=
|Shear modulus=
|Bulk modulus=
|Poisson ratio=
|Mohs hardness=
|Vickers hardness=
|Brinell hardness=
|CAS number=7440-35-9
|isotopes=
{{infobox element/isotopes decay2 | mn=241 | sym=Am
| na=[[synthetic radioisotope|syn]] | hl=[[1 E10 s|432.2 y]]
| dm1=[[spontaneous fission|SF]] | de1=– | pn1= | ps1=–
| dm2=[[alpha decay|α]] | de2=5.486 | link2=neptunium-237 | pn2=237 | ps2=Np }}
{{infobox element/isotopes decay3| mn=242[[nuclear isomer|m1]] | sym=Am
| na=syn | hl=141 y
| dm1=[[Isomeric transition|IT]] | de1=0.049 | pn1=242 | ps1=Am
| dm2=α | de2=5.637 | link2=neptunium-238 | pn2=238 | ps2=Np
| dm3=SF | de3=– | pn3= | ps3=– }}
{{infobox element/isotopes decay2 | mn=243 | sym=Am
| na=syn | hl=[[1 E11 s|7370 y]]
| dm1=SF | de1=– | pn1= | ps1=–
| dm2=α | de2=5.275 | link2=neptunium-239 | pn2=239 | ps2=Np }}
|isotopes comment=
|naming=after the [[Americas]]
|discovered by=[[Glenn T. Seaborg]], [[Ralph A. James]], [[Leon O. Morgan]], [[Albert Ghiorso]]
|discovery date=1944
}}
'''Americium''' sī 1 ê [[hoà-ha̍k goân-sò͘]]. I ê [[goân-chú-hoan]] sī 95, hoà-ha̍k hû-hō sī Am.
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