Groupe 17 du tableau périodique

Page d’aide sur l’homonymie

«  Groupe des halogènes » redirige ici. Ne pas confondre avec Famille des halogènes.

Cet article court présente un sujet plus développé dans : Halogène.

Le groupe 17 du tableau périodique, dit des halogènes (du grec ancien ἅλς (hals) signifiant « sel », et γεννάν (gennán) signifiant « engendrer »), autrefois appelé groupe VIIB dans l'ancien système IUPAC utilisé en Europe et groupe VIIA dans le système CAS nord-américain, contient les éléments chimiques de la 17e colonne, ou groupe, du tableau périodique des éléments[1] :

Période Élément chimique Z Famille d'éléments Configuration électronique[2]
2 F Fluor 9 Halogène [He] 2s2 2p5
3 Cl Chlore 17 Halogène [Ne] 3s2 3p5
4 Br Brome 35 Halogène [Ar] 4s2 3d10 4p5
5 I Iode 53 Halogène [Kr] 5s2 4d10 5p5
6 At Astate 85 Métalloïde [Xe] 6s2 4f14 5d10 6p5
7 Ts Tennesse 117 Indéterminée [Rn] 7s2 5f14 6d10 7p5

Les éléments de ce groupe appartiennent au bloc p du tableau périodique. Le groupe des halogènes n'est pas confondu avec la famille des halogènes car il contient des éléments — astate et tennesse — qui ne font pas partie de cette famille.

Notes et références

  1. ↑ (en) E. Fluck, « New notations in the periodic table », Pure and Applied Chemistry, vol. 60, no 3,‎ , p. 1365-3075 (DOI 10.1351/pac198860030431, lire en ligne)
  2. ↑ (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
v · m
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