Madya M.Umanailo 2023. Analysis of the Ability of Class X Students of SMK Negeri 2 South Halmahera on the Material of the Periodic System of Thesis Elements under the guidance of Muliadi and Nur Asbirayani Limatahu. This research is a descriptive study that aims to determine the learning abilities of class X students of SMK Negeri 2 Halmahera Selatan on the material of the periodic system …