var data =
{
    "elements": [

         {
            "name": "Promethium", 
            "appearance": "metallic", 
            "atomic_mass": 145, 
            "boil": 3273, 
            "category": "lanthanide", 
            "color": null, 
            "density": 7.26, 
            "discovered_by": "Chien Shiung Wu", 
            "melt": 1315, 
            "molar_heat": null, 
            "named_by": "Isotopes of promethium", 
            "number": 61, 
            "period": 6, 
            "phase": "Solid", 
            "source": "https://en.wikipedia.org/wiki/Promethium", 
            "spectral_img": null, 
            "summary": "Promethium, originally prometheum, is a chemical element with the symbol Pm and atomic number 61. All of its isotopes are radioactive; it is one of only two such elements that are followed in the periodic table by elements with stable forms, a distinction shared with technetium. Chemically, promethium is a lanthanide, which forms salts when combined with other elements.", 
            "symbol": "Pm", 
            "xpos": 7, 
            "ypos": 9, 
            "shells": [
                2,
                8, 
                18, 
                23, 
                8, 
                2
            ]
        }
    ]
}
