var data =
{
    "elements": [

        {
            "name": "Thulium", 
            "appearance": "silvery gray", 
            "atomic_mass": 168.934222, 
            "boil": 2223, 
            "category": "lanthanide", 
            "color": null, 
            "density": 9.32, 
            "discovered_by": "Per Teodor Cleve", 
            "melt": 1818, 
            "molar_heat": 27.03, 
            "named_by": null, 
            "number": 69, 
            "period": 6, 
            "phase": "Solid", 
            "source": "https://en.wikipedia.org/wiki/Thulium", 
            "spectral_img": null, 
            "summary": "Thulium is a chemical element with symbol Tm and atomic number 69. It is the thirteenth and antepenultimate (third-last) element in the lanthanide series. Like the other lanthanides, the most common oxidation state is +3, seen in its oxide, halides and other compounds.", 
            "symbol": "Tm", 
            "xpos": 15, 
            "ypos": 9, 
            "shells": [
                2,
                8, 
                18, 
                31, 
                8, 
                2
            ]
        }
    ]
}
