La référence du béryllium

                                                                                    Kaven Nguyen
              
                                                                                     Groupe 11

                                                                 

                                                               Symbole: Be
                                                               Numéro atomique : 4
                                                               Point de fusion: 1287 °C
                                                               Point d'ébullition: 2471 °C
                                                               Nombre d'électrons: 4
                                                               Masse atomique: 9,012182(3)

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