Káng "Năk" gì nguòng-mā

{{twinLAT|鈉}}
{{Infobox element
|name=Natri
|enname=sodium
|laname=sodium
|alt name=natrium
|number=11
|symbol=Na
|left=[[Neon]]
|right=[[Mī (gĭng-sṳ̆k)|Magne]]
|above=[[Lī (gĭng-sṳ̆k)|Liti]]
|below=[[Gák (gĭng-sṳ̆k)|Kali]]
|series=giĕng-gĭng-sṳ̆k
|series comment=
|group=1
|period=3
|block=s
|series color=
|appearance=silvery white metallic
|image name=Nametal.JPG.jpg
|image size=
|image name comment=
|image name 2=Sodium Spectra.jpg
|image name 2 comment=Spectral lines of sodium
|atomic mass=22.98976928
|atomic mass ref=<ref name="IUPAC">[http://www.ciaaw.org/atomic-weights.htm Standard Atomic Weights 2013]. [[Commission on Isotopic Abundances and Atomic Weights]]</ref>
|atomic mass 2=2
|atomic mass comment=
|electron configuration=&#91;[[neon|Ne]]&#93; 3s<sup>1</sup>
|electrons per shell=2, 8, 1
|color=
|phase=gó-tā̤
|phase comment=
|density gplstp=
|density gpcm3nrt=0.968
|density gpcm3nrt 2=
|density gpcm3mp=0.927
|melting point K=370.944
|melting point C=97.794
|melting point F=208.029
|boiling point K=1156.090
|boiling point C=882.940
|boiling point F=1621.292
|triple point K=
|triple point kPa=
|critical point K=2573
|critical point MPa=35
|critical point comment=''(extrapolated)''
|heat fusion=2.60
|heat fusion 2=
|heat vaporization=97.42
|heat capacity=28.230
|vapor pressure 1=554
|vapor pressure 10=617
|vapor pressure 100=697
|vapor pressure 1 k=802
|vapor pressure 10 k=946
|vapor pressure 100 k=1153
|vapor pressure comment=
|crystal structure=body-centered cubic
|oxidation states='''+1''', −1
|oxidation states comment=(a&nbsp;strongly [[base (chemistry)|basic]] oxide)
|electronegativity=0.93
|number of ionization energies=4
|ionization energy 1=495.8
|ionization energy 2=4562
|ionization energy 3=6910.3
|atomic radius=186
|atomic radius calculated=
|covalent radius=166±9
|Van der Waals radius=227
|magnetic ordering=[[paramagnetism|paramagnetic]]
|magnetic ordering ref=<ref>[http://www-d0.fnal.gov/hardware/cal/lvps_info/engineering/elementmagn.pdf Magnetic susceptibility of the elements and inorganic compounds], in {{RubberBible86th}}</ref>
|electrical resistivity unit prefix=n
|electrical resistivity at 0=
|electrical resistivity at 20=47.7
|thermal conductivity=142
|thermal conductivity 2=
|thermal diffusivity=
|thermal expansion=
|thermal expansion at 25=71
|speed of sound=
|speed of sound rod at 20=3200
|speed of sound rod at r.t.=
|Young's modulus=10
|Shear modulus=3.3
|Bulk modulus=6.3
|Poisson ratio=
|Mohs hardness=0.5
|Vickers hardness=
|Brinell hardness=0.69
|CAS number=7440-23-5
|isotopes=
{{infobox element/isotopes decay3 (2 2 1) | mn=22 | sym=Na | na=[[trace radioisotope|trace]] | hl=[[1 E7 s|2.602&nbsp;y]] | dm1=[[beta decay|β<sup>+</sup>]]→[[Gamma decay|γ]]
 | de1a=0.5454 | link1a=neon-22 | pn1a=22 | ps1a=Ne*
 | de1b=1.27453(2)<ref name=npa521_1>{{cite journal
 | last=Endt | first=P. M.
 | title=Energy levels of A = 21–44 nuclei (VII)
 | journal=Nuclear Physics A | volume=521 | pages=1–400
 | date=1990 | doi=10.1016/0375-9474(90)90598-G
 | bibcode=1990NuPhA.521....1E
}}</ref> | pn1b=22 | ps1b=Ne
 | dm2=[[electron capture|ε]]→γ | de2a=– | pn2a=22 | ps2a=Ne*
 | de2b=1.27453(2)
 | pn2b=22 | ps2b=Ne
 | dm3=β<sup>+</sup> | de3=1.8200 | pn3=22 | ps3=Ne}}
{{infobox element/isotopes stable | mn=23 | sym=Na | na=100% | n=12 |firstlinks=yes}}
|isotopes comment=<nowiki>*</nowiki> = [[excited state]]
|predicted by=
|prediction date=
|discovery and first isolation by=[[Humphry Davy]]
|discovery date=1807
|named by=
|named date=
|history comment label=
|history comment=
}}
'''Năk''' (鈉) sê siŏh cṳ̄ng [[gĭng-sṳ̆k]], iâ sê siŏh cṳ̄ng [[huá-hŏk nguòng-só]]. [[Nguòng-cṳ̄ sê̤ṳ-só]] sê 11, huá-hŏk hù-hô̤ sê Na.

==Huá-hŏk séng-cék==

==Éng-ê̤ṳng==

==Cié-chṳ̄==
:<math> \rm 2NaCl \longrightarrow 2Na + Cl_2 </math>

Gì-dṳ̆ng diŏh kĕk CaCl<sub>2</sub> có̤ [[chŭi-huá-gé]], ŭng-dô 500℃, diêng-ák 6V.

==Chăng-kō̤ cṳ̆-lâiu==
{{reflist}}

{{Ciŭ-gĭ-biēu}}
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[[分類:Huá-hŏk nguòng-só]]