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Période 3 du tableau périodique

La période 3 du tableau périodique est la troisième ligne, ou période, du tableau périodique des éléments. Elle contient des éléments du bloc s et du bloc p :

  1 2   3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
1 H     He
2 Li Be   B C N O F Ne
3 Na Mg   Al Si P S Cl Ar
4 K Ca   Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr
5 Rb Sr   Y Zr Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te I Xe
6 Cs Ba
*
Lu Hf Ta W Re Os Ir Pt Au Hg Tl Pb Bi Po At Rn
7 Fr Ra
*
*
Lr Rf Db Sg Bh Hs Mt Ds Rg Cn Nh Fl Mc Lv Ts Og
     
 
*
La Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb  
 
*
*
Ac Th Pa U Np Pu Am Cm Bk Cf Es Fm Md No  
       
Élément chimique Famille d'éléments Configuration électronique[1]
11 Na Sodium Métal alcalin [Ne] 3s1
12 Mg Magnésium Métal alcalino-terreux [Ne] 3s2
13 Al Aluminium Métal pauvre [Ne] 3s2 3p1
14 Si Silicium Métalloïde [Ne] 3s2 3p2
15 P Phosphore Non-métal [Ne] 3s2 3p3
16 S Soufre Non-métal [Ne] 3s2 3p4
17 Cl Chlore Halogène [Ne] 3s2 3p5
18 Ar Argon Gaz noble [Ne] 3s2 3p6

Notes et références

[modifier | modifier le code]
  1. (en) CRC Handbook of Chemistry and Physics, section 1 : Basic Constants, Units, and Conversion Factors, sous-section : Electron Configuration of Neutral Atoms in the Ground State, 84e édition en ligne, CRC Press, Boca Raton, Floride, 2003.


  1 2                               3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
1  H     He
2  Li Be   B C N O F Ne
3  Na Mg   Al Si P S Cl Ar
4  K Ca   Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr
5  Rb Sr   Y Zr Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te I Xe
6  Cs Ba   La Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb Lu Hf Ta W Re Os Ir Pt Au Hg Tl Pb Bi Po At Rn
7  Fr Ra   Ac Th Pa U Np Pu Am Cm Bk Cf Es Fm Md No Lr Rf Db Sg Bh Hs Mt Ds Rg Cn Nh Fl Mc Lv Ts Og
8  119 120 *    
  * 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142  


Métaux alcalins Métaux alcalino-terreux Lanthanides Métaux de transition Métaux pauvres Métalloïdes Non-métaux Halogènes Gaz nobles Éléments non classés
Actinides
Superactinides
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Période 3 du tableau périodique
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