element.json

{
    "$id": "element",
    "$schema": "http://json-schema.org/draft-07/schema#",
    "title": "element schema",
    "type": "object",
    "properties": {
        "symbol": {
            "$ref": "./definitions/chemical_elements.json#periodic_table"
        },
        "properties": {
            "type": "array",
            "description": "list of elemental properties",
            "items": {
                "anyOf": [
                    {
                        "$ref": "properties_directory/elemental/atomic_radius.json"
                    },
                    {
                        "$ref": "properties_directory/elemental/electronegativity.json"
                    },
                    {
                        "$ref": "properties_directory/elemental/ionization_potential.json"
                    }
                ]
            }
        }
    }
}