text: # Năk
  Chăng-kō̤ Mìng-dĕ̤ng-ngṳ̄ Háng-cê gì bēng-buōng. / 參考閩東語漢字其版本。
  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.
  
  ## Cié-chṳ̄
  {\displaystyle {\rm {2NaCl\longrightarrow 2Na+Cl_{2}}}}
  Gì-dṳ̆ng diŏh kĕk CaCl2 có̤ chŭi-huá-gé, ŭng-dô 500℃, diêng-ák 6V.
  
title: Năk
wikitext: {{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}}
  {{Authority control}}
  [[分類:Huá-hŏk nguòng-só]]